Baby formation, Pregnancy, and Maternal changes Flashcards

Question

What happens to maternal serum iron and ferritin levels without iron supplementation during pregnancy? A) They increase significantly B) They remain unchanged C) They decline after mid-pregnancy D) They stabilize after the first trimester

Answer 1

C) They decline after mid-pregnancy Correct. As pregnancy progresses, serum iron and ferritin levels decline if iron supplementation is not used. This is due to the increased iron demand and expansion of plasma volume, which dilutes iron levels. A) They increase significantly Wrong. Without supplementation, iron levels decline due to increased iron demand during pregnancy, especially after mid-pregnancy. B) They remain unchanged Wrong. Iron levels do not remain unchanged in pregnancy. They typically decline if iron supplementation is not provided to meet the growing demands. D) They stabilize after the first trimester Wrong. Iron levels do not stabilize after the first trimester but tend to decline as pregnancy continues, especially without iron supplementation.

Answer 2

C) It becomes less active to tolerate the fetus Correct. During pregnancy, the immune system becomes less active in certain ways to tolerate the fetus and prevent the body from attacking it as a foreign entity. A) It becomes more active to fight infections Wrong. The immune system becomes less active in some ways during pregnancy to avoid attacking the fetus. This reduced immune activity is necessary to accept the fetus, which has both maternal and paternal genes. B) It remains unchanged throughout pregnancy Wrong. The immune system does not remain unchanged. It adjusts to avoid attacking the fetus and is less active in some areas while still protecting the mother from infections. D) It produces more inflammatory proteins to combat bacteria Wrong. The immune system reduces inflammation and produces less inflammatory response during pregnancy to avoid rejecting the fetus. The system becomes more tolerant and protective, not aggressively inflammatory.

Answer 3

B) Uterus, baby, placenta, and increased fluid volumes Correct. The majority of pregnancy weight gain comes from the uterus, baby, placenta, amniotic fluid, and increased blood volume. These components make up the bulk of weight gain, with fat stores being a secondary contributor. A) Increased fat stores only Wrong. While fat stores do contribute to weight gain, they are not the primary source. The major contributors to weight gain are the uterus, baby, placenta, amniotic fluid, and increased blood and fluid volumes. C) Only stored protein and fat Wrong. While protein and fat are involved, the primary contributors to weight gain during pregnancy are the developing structures like the uterus, placenta, and baby. D) Increased muscle mass and fat stores Wrong. While muscle mass and fat stores increase slightly, they are not the primary sources of pregnancy weight gain. Most of the weight gain comes from the expanding pregnancy-related structures.

Answer 4

**B) Metabolism increases to meet the growing fetus's needs Correct. Pregnancy increases metabolism to supply energy to the fetus. The basal metabolic rate rises significantly during pregnancy, with higher increases for women expecting twins, it can reach 30%. It actually increases by about 20% by the third trimester for a single child.** A) Basal metabolic rate decreases during pregnancy Wrong. During pregnancy, basal metabolic rate (BMR) increases to support the growing fetus's needs. It increases by about 20% by the third trimester. C) No changes occur in metabolism Wrong. Metabolism does change during pregnancy. It increases to meet the energy demands of the developing fetus. D) Pregnancy reduces the efficiency of energy storage Wrong. Pregnancy actually increases the efficiency of energy storage. Women tend to store fat during pregnancy, which serves as an energy reserve for both the mother and fetus.

Answer 5

**C) 12.5 kg (27.5 lbs) Correct. The average weight gain during pregnancy is 12.5 kg (27.5 lbs), which has remained consistent across studies.** A) 10 kg (22 lbs) Wrong. This is below the typical average weight gain during pregnancy, which is usually around 12.5 kg (27.5 lbs). B) 15 kg (33 lbs) Wrong. This is an overestimate. The average weight gain is typically around 12.5 kg (27.5 lbs), though some women may gain more, especially if they are pregnant with twins. D) 20 kg (44 lbs) Wrong. This is too high. The typical range is closer to 12.5 kg (27.5 lbs), with only certain circumstances (such as twins) resulting in greater weight gain.

Answer 6

**Correct Answer: B) To support the fetus, placenta, and expanded maternal blood volume** Explanation: A) Incorrect: While water retention helps maintain hydration, its primary purpose is to support physiological needs. B) Correct: The additional water supports the fetus, placenta, amniotic fluid, and growth of the uterus and breasts, as well as increases in blood volume. C) Incorrect: Maternal osmolality actually decreases, not increases, during pregnancy to facilitate water transfer to the fetus. D) Incorrect: Fluid retention is not specifically stored for labor.

Answer 7

**Correct Answer: B) Venous pressure from the uterus compressing the vena cava. B) Correct: The growing uterus partially compresses the vena cava, increasing venous pressure in the lower body and leading to fluid accumulation.** Explanation: A) Incorrect: Water intake can contribute to hydration but does not directly cause edema. C) Incorrect: Edema occurs due to a decline in interstitial colloid osmotic pressure, not an increase. D) Incorrect: Amniotic fluid levels are unrelated to the cause of dependent edema. **More information:** Uterus Compressing the Vena Cava and Fluid Accumulation: During pregnancy, the growing uterus expands to accommodate the developing fetus. As the uterus enlarges, it can partially compress the inferior vena cava, the large vein responsible for returning blood from the lower body to the heart. This compression increases venous pressure in the lower extremities (like the legs and ankles). When the venous pressure increases, it becomes harder for blood to flow back to the heart efficiently. This slower circulation causes fluid to accumulate in the surrounding tissues, resulting in dependent edema, which is often observed as swelling in the ankles, feet, or lower legs, especially later in the day. 2) A decline in interstitial colloid osmotic pressure, favoring fluid accumulation. Tissue spaces: Fluid may also collect in other interstitial tissues, including around the uterus, breasts, and skin, contributing to the overall weight gain and the water retention seen in pregnancy. Key Points: The compression of the vena cava reduces the rate at which blood returns to the heart. Increased pressure in the veins leads to fluid "leaking" into the interstitial spaces, causing swelling.

Answer 8

**Correct Answer: B) To promote water transfer to the fetus** Explanation: A) Incorrect: While osmolality affects thirst, the decrease primarily facilitates fetal hydration. B) Correct: A decrease in plasma osmolality creates a gradient that promotes water transfer to the fetus. C) Incorrect: Osmolality changes are unrelated to lipid metabolism. D) Incorrect: Protein synthesis is not directly affected by osmolality changes. **More Information** Decrease in Plasma Osmolality and Water Transfer to the Fetus: Plasma osmolality is a measure of the concentration of dissolved particles (like salts and proteins) in the blood. During pregnancy, maternal plasma osmolality drops by about 10 mOsm/kg. This is due to hormonal changes, such as the actions of relaxin and adjustments in vasopressin secretion (which affects thirst and water retention). A lower plasma osmolality in the mother compared to the fetus creates a gradient that drives water from the maternal circulation to the fetus. This gradient ensures that water flows across the placenta to hydrate the fetus, support the amniotic fluid, and help in fetal development. Key Points: Gradient effect: Water moves from areas of lower osmolality (maternal plasma) to higher osmolality (fetal circulation). This natural adjustment helps maintain fetal hydration and development while also supporting the growing amniotic fluid volume.

Answer 9

**Correct Answer: C) Pregnancy-induced insulin resistance** Insulin resistance in late pregnancy ensures glucose is preferentially delivered to the fetus by limiting maternal glucose utilization. Explanation: A) Incorrect: Insulin sensitivity actually decreases in late pregnancy, not increases. B) Incorrect: Insulin production increases during pregnancy to compensate for insulin resistance. D) Incorrect: While glucagon suppression occurs, it is not the primary mechanism ensuring fetal glucose supply.

Answer 10

**Correct Answer: C) To meet increased protein demands for fetal growth** During pregnancy, protein is crucial for both fetal and maternal development, especially in the third trimester when fetal growth peaks. Protein supports the synthesis of fetal tissues, placental structures, maternal blood volume, uterine growth, and breast glandular tissue. Why C is Correct: Protein is directly required for: Building fetal muscles, organs, and bones. Supporting the growth of the placenta and uterus. Increasing maternal hemoglobin and plasma protein production. Pregnancy inreases protein stores by approximately 1kg 500g in the fetus and the placenta and the other 500g in the uterus, breast and maternal blood What is the protein requirements for pregnant women * Recent studies suggest higher protein needs during pregnancy than currently recommended: * 1.22 g/kg/day in early pregnancy. * 1.52 g/kg/day in late pregnancy. * Current guidelines (0.88 g/kg/day) may underestimate actual requirements.

Answer 11

**A) It supports hormone production and fetal energy needs. Elevated lipid levels provide precursors for hormone synthesis and an energy source for the fetus.** B) Incorrect: Maternal hyperlipidemia is a normal adaptation, not a sign of pathology. C) Incorrect: Hyperlipidemia occurs partly due to increased, not decreased, estrogen stimulation. D) Incorrect: Lipid changes are not directly involved in preventing gestational diabetes.

Answer 12

Extra Calorie Needs: * Additional calories needed daily: * 85 kcal/day in the first trimester. * 285 kcal/day in the second trimester. * 475 kcal/day in the third trimester.

Answer 13

**C) Routine screening for GDM is necessary in mid-pregnancy to detect abnormal glucose metabolism.** Correct: Insulin resistance develops as a normal adaptation during pregnancy. Screening ensures early detection and management of GDM. Women who had gestational diabetes mellitus (GDM) or preeclampsia (a pregnancy-related high blood pressure condition) are more likely to have lingering elevated lipid levels after pregnancy. These conditions can disrupt normal metabolic and lipid regulation, increasing the risk of long-term cardiovascular issues A) Increased protein synthesis leads to reduced glucose demand. Wrong: Protein synthesis does increase during pregnancy, but it does not reduce glucose demand. In fact, glucose demand increases to support fetal growth. B) Pregnancy decreases the risk of gestational diabetes mellitus (GDM). Wrong: Pregnancy increases the risk of GDM due to insulin resistance, especially in the second and third trimesters. D) Insulin sensitivity increases throughout pregnancy, preventing hyperglycemia. Wrong: Insulin sensitivity actually decreases, especially in later pregnancy, to ensure glucose availability for the fetus.

Answer 14

**B) Emphasize balanced nutrition and physical activity. Correct: Balanced nutrition and regular activity help maintain healthy glucose levels and prevent excessive weight gain.** A) Limit carbohydrate intake to less than 100 grams per day. Wrong: Severe restriction of carbohydrates is not recommended during pregnancy as glucose is vital for fetal development. C) Increase fat intake to spare glucose utilization. Wrong: While fat metabolism is important, excessive fat intake is not the primary strategy for managing glucose levels. D) Avoid screening for GDM unless there are symptoms. Wrong: GDM is often asymptomatic, making routine screening critical.

Answer 15

**B) Fat storage transitions to a catabolic state with increased lipolysis. Correct: Late pregnancy involves a shift to fat breakdown (lipolysis) to provide energy for the mother while sparing glucose for the fetus.** A) Fat accumulation increases significantly. Wrong: Fat storage predominates in early pregnancy, not late pregnancy. C) Lipoprotein lipase activity increases to promote fat storage. Wrong: Lipoprotein lipase activity decreases, preventing further fat storage. D) Maternal lipid levels remain unchanged from early pregnancy. Wrong: Lipid levels significantly rise in late pregnancy to support energy needs.

Answer 16

**B) Rapid decline in triglyceride levels. Correct: Breastfeeding enhances the metabolic clearance of triglycerides, contributing to a healthier lipid profile postpartum.** A) Increased LDL cholesterol levels. Wrong: Breastfeeding does not increase LDL; it often stabilizes or reduces lipid levels. C) Persistent hyperlipidemia for up to a year postpartum. Wrong: Hyperlipidemia typically resolves within months postpartum, especially with breastfeeding. D) Reduced need for dietary fat intake. Wrong: Dietary fat intake needs to be adequate to support milk production and overall health.

Answer 17

**C) Reflux of acidic gastric contents due to increased intra-abdominal pressure.** Correct: The growing uterus increases abdominal pressure, and reduced sphincter tone contributes to heartburn. A) Increased esophageal peristalsis. Wrong: Esophageal peristalsis slows during pregnancy, contributing to reflux. B) Increased lower esophageal sphincter tone. Wrong: Sphincter tone is reduced due to hormonal changes, leading to reflux. D) Faster gastric emptying. Wrong: Gastric emptying is unchanged during pregnancy.

Answer 18

A) Increased gallbladder volume and decreased contractility. Correct: Progesterone reduces gallbladder contractility, causing bile stasis and increasing the risk of stones. B) Elevated bile acid secretion due to estrogen stimulation. Wrong: While estrogen influences bile acids, bile stasis from decreased contractility is the primary factor for stone formation. C) Increased activity of smooth muscle contractions in the gallbladder. Wrong: Smooth muscle contractions decrease during pregnancy. D) Reduced hepatic production of cholesterol. Wrong: Hepatic cholesterol production increases during pregnancy.

Answer 19

B) It transiently increases free thyroxine (fT4) levels. Correct: Peak hCG levels stimulate the thyroid, leading to a temporary rise in fT4. A) It suppresses thyroid-stimulating hormone (TSH) receptors. Wrong: hCG stimulates TSH receptors due to its structural similarity to TSH. C) It reduces iodine requirements. Wrong: Pregnancy increases iodine requirements for fetal development and maternal thyroid hormone production. D) It directly stimulates T3 production without affecting T4. Wrong: hCG affects overall thyroid function, including T4. More information: hCG and Thyroid During Pregnancy: hCG's Role in Thyroid Function: Human chorionic gonadotropin (hCG) is structurally similar to thyroid-stimulating hormone (TSH). This similarity allows hCG to weakly bind to TSH receptors on the thyroid gland, leading to a transient increase in thyroid hormone production, particularly free thyroxine (fT4). The peak in hCG levels occurs in the first trimester, often resulting in a temporary suppression of TSH levels (a normal physiological response). **Clinical Implications:** This hCG-mediated stimulation supports increased metabolic demands during early pregnancy. In some cases, particularly with very high hCG levels (e.g., molar pregnancy or multiple gestations), excessive thyroid stimulation can lead to transient hyperthyroidism.

Answer 20

**A) Increased production due to estrogen stimulation. Correct: Estrogen stimulates the liver to produce more TBG, which binds and transports thyroid hormones.** B) Reduced iodine clearance by the kidneys. Wrong: Iodine clearance increases during pregnancy but is unrelated to TBG levels. C) Decreased demand for thyroid hormones. Wrong: Demand for thyroid hormones increases during pregnancy. D) Direct stimulation by progesterone. Wrong: Estrogen, not progesterone, increases TBG production. **More information:** Thyroxine-Binding Globulin (TBG) Levels in Pregnancy: Reason for Increased TBG Levels: Estrogen is the primary driver of increased TBG levels during pregnancy. It stimulates the liver to produce more TBG, a glycoprotein that binds thyroid hormones (T3 and T4) in the bloodstream. This increase in TBG helps maintain sufficient thyroid hormone availability for both the mother and fetus. Pregnancy requires higher levels of thyroid hormones to support fetal development, particularly for brain and nervous system maturation. By increasing TBG levels, the body maintains a reservoir of bound thyroid hormones, which can be released as needed. Impact on Thyroid Hormone Dynamics: With higher TBG levels, more thyroid hormone is bound and unavailable for immediate metabolic use. To compensate, the thyroid gland produces more total T3 and T4, ensuring adequate levels of free T3 (fT3) and free T4 (fT4)—the biologically active forms of thyroid hormones. This adaptation prevents hypothyroidism during pregnancy despite the increased metabolic demands.

Answer 21

**Correct Answer: B) There are no established reference ranges for pregnancy.** During pregnancy, lipid levels naturally rise as a normal adaptation to support the growing baby. However, since these levels vary widely among pregnant women and there are no agreed-upon "normal" reference ranges for pregnancy, testing lipids during this time may not provide useful information or guide treatment effectively. Why not A? Lipid levels do change significantly, especially in the third trimester. Why not C? While lipid levels don’t predict most complications, they can sometimes contribute to risks like pancreatitis in cases of extreme hyperlipidemia. Why not D? Lipid levels are not always normal; they increase significantly, which is expected and not harmful in most cases.

Answer 22

**Correct Answer: B) Women who experienced GDM or preeclampsia during pregnancy.** Women who had gestational diabetes mellitus (GDM) or preeclampsia (a pregnancy-related high blood pressure condition) are more likely to have lingering elevated lipid levels after pregnancy. These conditions can disrupt normal metabolic and lipid regulation, increasing the risk of long-term cardiovascular issues. A) Hypothyroidism can affect lipids but isn’t directly linked to pregnancy-related lipid changes. C) Breastfeeding typically helps lower lipid levels faster, not elevate them. D) Hyperlipidemia during pregnancy usually resolves after delivery in most cases.

Answer 23

A miscarriage (spontaneous abortion) is the loss of a pregnancy before the fetus can survive outside the womb, typically before 20 weeks of gestation. Miscarriages can occur due to genetic, structural, hormonal, or environmental factors that compromise the pregnancy's viability.

Answer 24

**B: Correct. Pre-test genetic counseling focuses on reviewing genetic testing options, potential outcomes, and associated decisions.** A: Incorrect. This describes post-test counseling, not pre-test counseling. C: Incorrect. Referrals for specialized care occur after abnormal results are identified. D: Incorrect. While genetic counseling can indirectly affect outcomes, reducing neonatal mortality is not the primary purpose of pre-test counseling.

Answer 25

**A. Residual risks and implications for the pregnancy** Post-Test Counseling for Negative Results What does it mean? Post-test counseling is essential for helping patients understand the results of genetic tests. For negative results, it’s important to explain that while no abnormalities were detected, there is still a "residual risk." This means that even with a negative test, there is a small chance that some conditions or genetic issues may not have been identified due to limitations of the testing methods. The implications for the pregnancy could involve reassurance or continued monitoring depending on the patient’s history or risk factors. What should happen if the results were positive? If the test results were positive, the counselor should: Explain the condition detected, including its nature, severity, and potential impact on the baby. Discuss recurrence risks for future pregnancies. Provide guidance on next steps, such as additional diagnostic tests, medical consultations, or specialized care. Offer psychosocial support and, if needed, referrals to psychological or psychiatric counseling for grief or emotional distress. Help the patient and family make informed decisions about pregnancy management or interventions.

Answer 26

**C: Correct. Gestational age is measured from the first day of the LMP.** A: Incorrect. This refers to developmental or fetal age, not gestational age. B: Incorrect. Gestational age starts approximately two weeks before ovulation, not from ovulation itself. D: Incorrect. While organogenesis occurs within gestation, it is not synonymous with gestational age.

Answer 27

**Correct Answer B: November 17** Step-by-step calculation: Add 7 days to February 10 → February 17. Subtract 3 months → November 17. Add 1 year → November 17, 2025.

Answer 28

**B: Correct. Full term is 39 0/7 to 40 6/7 weeks, which includes 39 2/7 weeks.** A: Incorrect. Early term is defined as 37 0/7 to 38 6/7 weeks. C: Incorrect. Late term begins at 41 0/7 weeks. D: Incorrect. Postterm is at or beyond 42 weeks.

Answer 29

**B: Correct. 140 bpm falls within the normal range for FHR.** A: Incorrect. 90 bpm is below the normal range (110–160 bpm). C: Incorrect. 200 bpm is too high and may indicate fetal tachycardia. D: Incorrect. While 180 bpm can be normal early in pregnancy, it is at the higher end and less common.

Answer 30

**B: Correct. hCG is produced after implantation and is used to confirm and monitor pregnancy progression.** A: Incorrect. Fetal heartbeat is detected by ultrasound, not hCG. C: Incorrect. Gestational age is typically assessed via ultrasound and LMP, not hCG levels. D: Incorrect. hCG is unrelated to amniotic fluid volume assessment.

Answer 31

**Answer: B. Genetic counseling is primarily educational, helping patients understand genetic testing and its implications.** (A is incorrect because diagnosis may follow but is not the goal of counseling itself. C is incorrect because interventions are not part of the counseling process. D is incorrect because genetic counseling complements, not replaces, ultrasound.)

Answer 32

**Answer: C. Psychosocial support is integral to the genetic counseling process, both pre- and post-testing.** (A and B are incorrect as support is not conditional upon results or visible distress. D is incorrect as counseling occurs outside procedural settings.)

Answer 33

Answer: B. Doppler detection of fetal heart tones is usually possible after 10 weeks. (A is too early, and C and D apply to fetoscope detection.) * Detection: * Doppler device: Detectable after 10 weeks’ gestation. * Fetoscope: Detectable after 18–20 weeks’ gestation. * Normal Fetal Heart Rate: * 110–160 bpm, with higher rates observed earlier in pregnancy. A fetoscope is only audible after 18–22 weeks because of the following reasons: Fetal Size and Position: Before 18 weeks, the fetus is much smaller, and the heart's sounds are not strong enough to travel through the maternal abdominal wall and amniotic fluid to be detected by a fetoscope. Uterine and Abdominal Wall Thickness: In early pregnancy, the uterus is still located deep within the pelvis, and the abdominal wall may provide an additional barrier to sound transmission. Fetoscope Mechanism: A fetoscope relies on amplifying sound waves traveling through the mother's abdomen. Early in pregnancy, these sound waves are weaker compared to later weeks when the fetal heart is larger and stronger. Placental Interference: In some cases, if the placenta is anterior (located at the front of the uterus), it can further muffle the sound of the fetal heartbeat, making it harder to hear with a fetoscope until later in pregnancy. Alternative Tools in Early Pregnancy: Early in pregnancy, a Doppler ultrasound is used because it amplifies the fetal heartbeat using sound wave reflections. Doppler devices can detect fetal heart tones as early as 10–12 weeks, well before a fetoscope becomes effective.

Answer 34

Answer: B. Cardiac activity is the earliest milestone detectable at 6 weeks. (A, C, and D occur later in gestation.)

Answer 35

Answer: A. Crown-rump length is accurate within 5 days for early dating. (B is incorrect as genetic testing requires separate procedures. C is incorrect because ultrasound complements other tests, and D is a secondary benefit.) Crown-Rump Length (CRL): This is the measurement from the top of the embryo’s head (the crown) to the bottom of its bottom (the rump). Use in Gestational Age: The CRL is a common and accurate method for estimating gestational age during the first trimester, typically between 6 to 13 weeks. This measurement helps assess the size and development of the embryo or fetus. Pregnancy lost: * Gestational sac diameter ≥25 mm and no embryo. This indicates that an embryo should have developed, but none is present, confirming pregnancy loss. * Crown-rump length ≥7 mm and no cardiac activity. Normal Fetal Development Timing: By the time the embryo reaches a CRL of 7 mm, it is well past the point where the heart should be actively beating. The heart typically begins to beat around 5–6 weeks of gestation and is detectable by transvaginal ultrasound when the CRL is approximately 2 mm or larger. By the time the embryo reaches a CRL of 7 mm (usually around 6–7 weeks gestation), cardiac activity should be consistently visible. Why is this significant? The absence of cardiac activity at a CRL of 7 mm indicates that the embryo has ceased to develop, even though it reached a size where cardiac activity is expected. This is a well-established ultrasound criterion for early pregnancy loss because it reflects a deviation from normal developmental milestones.

Answer 36

Answer: B. FGR reflects poor growth, whereas SGA is determined by birth weight percentile alone. (A, C, and D are incorrect as they oversimplify or misinterpret definitions.)

Answer 37

Answer: C. NMR counts deaths within the first 28 days of life per 1000 live births. (A measures stillbirths, B measures early neonatal deaths, and D refers to fetal losses before viability.)

Answer 38

Answer: B. Stillbirth refers to fetal death at ≥20 weeks. (A is a miscarriage, C describes pre-viability loss, and D is a neonatal death.)

Answer 39

- Gestation refers to the period of development of a fetus in the uterus, starting from the first day of the last menstrual period (LMP) and ending with birth. It typically lasts about 40 weeks (or 280 days) in humans, divided into three trimesters. - * Begins from the time of implantation, typically 4–6 days after ovulation. * Represents the actual age of the fetus post-conception.

Answer 40

Mnemonic to Remember Fetal Development Milestones Here's a mnemonic to remember key events in fetal development by weeks: "Babies Can Feel Little Kicks Moving Forward." (Based on key events at Weeks 4–20+) Babies (Blastocyst implantation at Week 4–5): Implantation occurs, and the embryonic disk starts to form layers. Can (Cardiac activity at Week 6): Heartbeat becomes detectable by ultrasound. Feel (Formation of limb buds at Week 7–8): Limb buds and initial facial structures appear. Little (Human-like appearance at Week 10): The fetus takes on a human appearance, and all major organs are formed. Kicks (Quickening at Week 16–20): The mother can begin to feel fetal movements. Moving (Measurable heartbeat with Doppler at Week 10+): Doppler devices detect fetal heart tones. Forward (Fetal viability increases at Week 24+): Significant chance of survival outside the womb, though preterm care is needed. Mnemonic to Remember Fetal Development Milestones Here's a mnemonic to remember key events in fetal development by weeks: "Babies Can Feel Little Kicks Moving Forward." (Based on key events at Weeks 4–20+) Babies (Blastocyst implantation at Week 4–5): Implantation occurs, and the embryonic disk starts to form layers. Can (Cardiac activity at Week 6): Heartbeat becomes detectable by ultrasound. Feel (Formation of limb buds at Week 7–8): Limb buds and initial facial structures appear. Little (Human-like appearance at Week 10): The fetus takes on a human appearance, and all major organs are formed. Kicks (Quickening at Week 16–20): The mother can begin to feel fetal movements. Moving (Measurable heartbeat with Doppler at Week 10+): Doppler devices detect fetal heart tones. Forward (Fetal viability increases at Week 24+): Significant chance of survival outside the womb, though preterm care is needed. Simplified Gestation Milestones by Weeks Here’s a breakdown: Week 4–5: Implantation occurs. Neural tube begins forming. Week 6: Heartbeat detected via transvaginal ultrasound. Week 7–8: Limb buds form. Facial features begin to take shape. Week 9–10: Human-like appearance. Finger movements start. Week 10: Doppler can detect fetal heart tones. Week 12: Reflexes develop, and the fetus starts moving (though not felt yet). Week 16–20: Quickening (mother feels fetal movements). Week 24: Fetal viability significantly increases. Week 28+: Continued growth and lung maturation. Week 37–40: Full term; baby ready for birth.

Answer 41

**Correct Answer: B. To monitor fetal growth and development** Explanation: Gestational age is primarily used to monitor fetal growth and development throughout pregnancy. It helps in timing prenatal care milestones and diagnostic testing. A is incorrect because fetal weight is assessed using ultrasound, not based on gestational age. C is incorrect because gestational age helps in assessing development, not in diagnosing specific conditions like gestational diabetes. D is incorrect because gestational age is not used to determine the type of delivery directly.

Answer 42

Correct Answer: B. Weight > 4000 g at birth An overweight baby. GDM increases macrosomia Explanation: Macrosomia refers to a newborn with a birth weight greater than 4000 g. Normal Birth Weight: A typical newborn’s birth weight is around 2500g (5.5 pounds) to 4000g (8.8 pounds). Low Birth Weight (LBW): Less than 2500g (5.5 lbs). Macrosomia: Greater than 4000g (8.8 lbs) at birth A is incorrect because a birth weight of 2500 g or less defines low birth weight, not macrosomia. C is incorrect because Fetal Growth Restriction (FGR) refers to a weight below the 10th percentile, not over the 90th percentile. D is incorrect because FGR refers to underweight for gestational age, not macrosomia.

Answer 43

**Correct Answer: B. 10 weeks Explanation: A Doppler device can detect fetal heart tones as early as 10 weeks of gestation.** Heart Development at 6 Weeks: The heart begins to develop around 6 weeks gestation but is not fully developed yet. At this stage, it starts as a simple tube that begins to beat, but it is not yet fully formed. Why Fetal Heart Tones (FHTs) Are Heard at 10 Weeks: At 10 weeks, the heart has developed further, and the fetal heart rate can be detected by a Doppler device. However, at 6 weeks, the heart is not yet fully developed or large enough to be detected clearly through a Doppler, which is why it is typically not heard until around 10 weeks. A is incorrect because FHTs are not detectable by Doppler at 6 weeks. C is incorrect because FHTs become detectable with a Doppler device much earlier than 18 weeks. D is incorrect because fetal heart tones are detectable earlier than 22 weeks with a Doppler.

Answer 44

Correct Answer: A. Crown-rump length measured by ultrasound Explanation: Crown-rump length is the most accurate method for assessing gestational age between 6–13 weeks, with a margin of error of ±5 days. B is incorrect because FHTs are used to assess fetal health, not gestational age. C is incorrect because maternal weight gain does not directly correlate with gestational age. D is incorrect because a urine pregnancy test is used to confirm pregnancy, not to determine gestational age.

Answer 45

Correct Answer: C. Obstetric history and pregnancy outcomes Explanation: The GTPAL system documents obstetric history, including the number of pregnancies (Gravida), term births, preterm births, abortions, and living children. A is incorrect because fetal position and size are assessed with different tools, like Leopold's maneuvers and ultrasound. B is incorrect because GTPAL focuses on pregnancy outcomes, not infections. D is incorrect because tests during prenatal visits are documented separately from obstetric history.

Answer 46

**Correct Answer: C) The first trimester includes the embryonic period from fertilization to 10 weeks' gestational age.** Explanation: The pregnancy is divided into three trimesters, each spanning about three months. The first trimester includes the embryonic period, which ends at 10 weeks.

Answer 47

Correct Answer: B) Birth weight less than the 10th percentile for gestational age. Explanation: SGA refers to a newborn whose weight is below the 10th percentile for the gestational age, indicating growth restriction.

Answer 48

1. Timing of Implantation Bleeding: After Ovulation and Fertilization: Fertilization occurs in the fallopian tube, usually within 24 hours after ovulation. The fertilized egg (zygote) then travels down the fallopian tube, undergoing cell division, and becomes a blastocyst. This journey takes about 4–6 days. Implantation: Around 6–10 days after fertilization, the blastocyst reaches the uterus and attaches to the uterine lining (endometrium). Implantation bleeding can occur when the blastocyst burrows into the endometrial lining, disrupting tiny blood vessels. 2. Characteristics of Implantation Bleeding: Light or Spotting: Implantation bleeding is typically very light compared to a menstrual period. It often appears as pink or brown spotting and may be intermittent rather than a steady flow. Short Duration: It usually lasts for a few hours to a couple of days at most. Amount: The bleeding is minimal and should not require a pad or tampon, although some individuals may notice it on toilet paper or light staining in underwear. 3. How It Differs from a Period: Implantation bleeding is much lighter, shorter, and does not involve clots. It occurs earlier than a typical period, usually about a week before the next expected period. 4. Associated Symptoms: Some individuals may experience mild cramping or abdominal discomfort, but it is less intense than menstrual cramps. If the bleeding is heavy (similar to or heavier than a normal period), it is unlikely to be implantation bleeding. Heavy bleeding in early pregnancy could indicate another issue, such as a threatened miscarriage or an ectopic pregnancy, and should be evaluated by a healthcare provider.

Answer 49

Correct Answer: B) It can stimulate uterine contractions. B) Sexual activity can stimulate uterine contractions through oxytocin release and prostaglandins in semen. A) Miscarriage risk is not directly related to sexual activity during preterm labor. C) Fatigue is not a primary concern in this context. D) Placental blood flow is not impacted by sexual activity. More information: Sexual activity is safe for most pregnancies unless there are complications like preterm labor, placenta previa, or unexplained bleeding.

Answer 50

**Answer and Explanation: Correct Answer: C) Advising complete abstinence from physical activity during pregnancy. C) Complete abstinence from physical activity is unnecessary unless medically indicated.** A) Tailoring exercise routines ensures safety and effectiveness. B) Healthcare consultation is critical, especially for high-risk pregnancies. D) Supervised classes promote safety and comfort.

Answer 51

Answer and Explanation: Correct Answer: B) Recommend abstaining from sexual activity until evaluated by a clinician. A) Symptoms like cramping or bleeding should not be ignored. B) Sexual activity should be avoided, and a healthcare provider should evaluate the cause. C) Exercise is unrelated to the management of post-intercourse symptoms. D) Rho(D) immune globulin is not indicated unless the patient is Rh-negative and bleeding is associated with potential pregnancy loss. ====================== Role of Rho(D) Immune Globulin: It acts as a prophylactic treatment by binding to any Rh-positive fetal red blood cells in the maternal bloodstream. This prevents the maternal immune system from recognizing these cells as foreign and stops the production of antibodies. By preventing sensitization, it protects future pregnancies from complications related to Rh incompatibility. **1. Coating the Rh-Positive RBCs:** Rho(D) immune globulin is an injectable solution containing anti-D antibodies (antibodies targeting the RhD antigen found on Rh-positive RBCs). When administered to an Rh-negative mother, these anti-D antibodies bind to any Rh-positive fetal RBCs that may have entered the maternal bloodstream during pregnancy or delivery (e.g., through placental microtears or trauma). **2. Masking Fetal RBCs from the Maternal Immune System:** By binding to the Rh-positive fetal RBCs, Rho(D) immune globulin "hides" them from the maternal immune system. The maternal immune system sees these antibody-coated fetal RBCs as already "handled" and does not launch a primary immune response to produce its own anti-Rh antibodies. **3. Clearing the Coated Fetal RBCs:** The coated fetal RBCs are cleared by the mother’s reticuloendothelial system (mainly the spleen and liver) through a process called opsonization. However, this happens without stimulating maternal B cells to produce their own anti-Rh antibodies. Timing of Administration: Prophylactic Use: It’s typically given at 28 weeks of gestation (to cover potential exposure during the third trimester) and again within 72 hours postpartum if the baby is confirmed to be Rh-positive. After Events with Fetal-Maternal Blood Mixing: It’s also administered after situations like miscarriage, trauma, or invasive procedures (e.g., amniocentesis) to prevent Rh sensitization from fetal RBC exposure.

Answer 52

***D) Both B and C* C) Explanation: C) What it means: Ultrasound imaging is the gold standard for visually confirming that the uterine cavity is empty, meaning there is no remaining pregnancy tissue or products of conception (POC). Why it's important: While β-hCG levels provide indirect evidence, ultrasonography offers direct visual confirmation, which is critical for ensuring no retained tissue that might cause complications such as infection or excessive bleeding. B) General β-hCG Trends in Normal Early Pregnancy The increase in β-hCG over a 48-hour period refers to how rapidly the hormone human chorionic gonadotropin (hCG) increases in early pregnancy. This hormone is produced by the syncytiotrophoblast, a tissue formed during pregnancy that eventually becomes part of the placenta. It is commonly used to assess the viability of a pregnancy in its early stages. Here’s a breakdown of what these numbers mean: Doubling Time: In early pregnancy, β-hCG levels should double approximately every 48–72 hours. The doubling rate slows as pregnancy progresses, particularly after reaching higher levels (above ~6,000 mIU/mL). Expected β-hCG Levels Based on Gestational Age (Gestational age is measured from the first day of the last menstrual period, ~2 weeks before ovulation/fertilization.) 9–16 days post-fertilization (3–4 weeks gestation): 5–426 mIU/mL. 17–24 days post-fertilization (4–5 weeks gestation): 18–7,340 mIU/mL. 25–30 days post-fertilization (5–6 weeks gestation): 1,080–56,500 mIU/mL. Plateau Phase: After about 8–10 weeks gestation, β-hCG levels typically plateau (between 20,000–200,000 mIU/mL) and then gradually decline as the pregnancy progresses into the second trimester. Interpreting β-hCG Levels in First Trimester Bleeding In cases of first-trimester bleeding, the rise or fall of β-hCG levels helps determine the viability or location of the pregnancy: Normal Rise in Viable Pregnancies: <1,500 mIU/mL: hCG should increase by ≥49% over 48 hours. This is expected in the early stages of pregnancy when hCG levels are still relatively low. A steady increase of at least 49% within 48 hours suggests that the pregnancy is progressing normally. 1,500–3,000 mIU/mL: hCG should increase by ≥40% over 48 hours. When the hCG level falls within this range, it suggests that the pregnancy is a little further along. A 40% increase over two days is still a sign of a healthy pregnancy progression. >3,000 mIU/mL: hCG should increase by ≥33% over 48 hours. As hCG levels rise, the rate of increase can slow slightly, but there should still be an upward trend. A 33% increase is still considered normal and reflects the ongoing development of the pregnancy. Abnormal or Nonviable Pregnancies Ectopic Pregnancy: β-hCG levels rise more slowly or plateau, and levels may remain low (<2,000 mIU/mL). Miscarriage: β-hCG levels decrease significantly or fail to rise appropriately. A) Bed rest is not recommended for managing pregnancy loss.

Answer 53

Cervical Changes: During pregnancy, the cervix becomes more vascular and sensitive due to increased blood flow. Sexual activity can cause minor irritation or friction, leading to light bleeding. This is often not a cause for concern, but it should be evaluated to rule out other conditions. Potential Issues: Threatened Miscarriage: Bleeding can be an early sign of a miscarriage or threatened miscarriage, especially if accompanied by cramping or passing tissue. Ectopic Pregnancy: Bleeding after intercourse could be a sign of an ectopic pregnancy, where the embryo implants outside the uterus (usually in the fallopian tube). This is a medical emergency that requires immediate attention. Placental Issues: In later stages of pregnancy, bleeding after sex could indicate problems like placenta previa (where the placenta covers the cervix) or placental abruption (where the placenta detaches from the uterus prematurely). Both are serious conditions that need medical intervention. Pain and Early Pregnancy Loss: Pain, especially cramping or abdominal pain, during early pregnancy can be an indicator of a higher risk of pregnancy loss (miscarriage). Here's why: Uterine Contractions: Pain during early pregnancy may suggest uterine contractions or spasms, which could be a sign of the uterus trying to expel the pregnancy. This is particularly true if the pain is severe, cramp-like, or persistent. Miscarriage or Threatened Miscarriage: Cramping or abdominal pain in conjunction with other symptoms (like bleeding) can signal that a miscarriage is in progress or may occur soon. Early pregnancy loss often involves uterine contractions that cause pain, especially if the cervix starts to dilate or efface (thin out), which is part of the process of miscarriage. Ectopic Pregnancy: Severe pain, especially on one side of the abdomen, could also be a sign of an ectopic pregnancy, where the embryo implants outside the uterus, usually in the fallopian tube. This is a medical emergency and can be life-threatening if not addressed promptly.

Answer 54

Normal Rise: In a healthy pregnancy, hCG levels typically double approximately every 48 to 72 hours during the first 6–8 weeks of pregnancy. Monitoring this rise helps confirm that the pregnancy is viable. Slow or No Increase: If the hCG levels do not rise appropriately (for example, if the increase is less than the expected percentage), it could be a sign of potential problems like: Ectopic Pregnancy: The embryo may have implanted outside the uterus. Miscarriage: The pregnancy may not be progressing normally. Molar Pregnancy: A rare condition where abnormal tissue grows instead of a normal embryo.

Answer 55

**A) Pelvic inflammatory disease (PID) Correct Answer: PID is a significant risk factor for ectopic pregnancy because it can cause scarring or damage to the fallopian tubes, increasing the likelihood that an embryo will implant outside the uterus.** B) Regular menstrual cycles Wrong: Regular menstrual cycles do not increase the risk of ectopic pregnancy. In fact, they are generally considered a sign of good reproductive health. C) Vaginal infections Wrong: While vaginal infections can cause discomfort, they are not direct risk factors for ectopic pregnancy. However, infections like PID can increase the risk of ectopic pregnancy. D) Use of contraceptive pills Wrong: While some birth control methods (e.g., tubal ligation) may increase the risk of ectopic pregnancy, contraceptive pills do not increase the risk. In fact, they help prevent pregnancy, thus reducing the likelihood of an ectopic pregnancy.

Answer 56

Correct Answer: B) Vitamin B6 (pyridoxine) + doxylamine (Unisom) Explanation: B is correct: Vitamin B6 in combination with doxylamine is the first-line treatment for NVP and has been shown to reduce symptoms by up to 70%. A is incorrect: Ondansetron is effective but is more expensive and can be used if the first-line treatment does not work. Ondansetron has been associated with a slight increase in the risk of certain birth defects, including congenital heart defects, based on some studies. However, the evidence remains inconclusive, and it is typically considered a second-line treatment for NVP and HG. The FDA has categorized it as a Category B drug, meaning that it is not expected to pose a risk to the fetus based on animal studies, but human data is limited. C is incorrect: Metoclopramide is a promotility agent and helps with gastric motility but is not typically used first-line for nausea and vomiting. It is cautioned due to tardive dyskinesia risk. D is incorrect: Promethazine is effective but has sedating effects, which makes it less ideal for first-line management. **Non-Pharmacologic:** * Dietary Modifications: Small, frequent meals; bland, low-fat, low- fiber foods. * Acupressure: P6 wrist bands or acupuncture. * Ginger: Shown to reduce nausea.

Answer 57

Correct Answer: B) Female fetus Explanation: B is correct: Pregnancies with a female fetus have been associated with an increased risk of hyperemesis gravidarum (HG). Studies suggest that the female fetus may lead to higher levels of human chorionic gonadotropin (hCG) and possibly higher levels of other hormones like estrogen and progesterone, both of which can exacerbate nausea and vomiting during pregnancy. This hormonal influence is thought to contribute to the more severe form of pregnancy-related nausea and vomiting seen in HG. A is incorrect: Multiple gestations (twins or more) increase the risk of HG, not a single pregnancy. C is incorrect: Gestational diabetes is not a risk factor for HG. D is incorrect: Elevated levels of hCG, rather than low levels, are associated with an increased risk of HG.

Answer 58

**Correct Answer: A) Fetal growth restriction (FGR) Explanation: A is correct: HG is associated with fetal growth restriction (FGR) and low birth weight, which can result from prolonged malnutrition or dehydration in the mother.** B is incorrect: NVP (and not HG) is associated with a reduced risk of miscarriage, not an increased risk. C is incorrect: While dehydration in HG can lead to hypotension, low blood pressure is not a direct complication of HG itself. D is incorrect: HG does not directly increase the risk of preterm labor; the concern is more about maternal dehydration and malnutrition.

Answer 59

**B) Correct: The primary goal in managing Nausea and Vomiting of Pregnancy (NVP) and Hyperemesis Gravidarum (HG) is to ensure the safety of the mother and alleviate symptoms, such as vomiting, dehydration, electrolyte imbalances, and weight loss.** - NVP: Associated with reduced risks of miscarriage, preterm delivery, and fetal growth restriction. - HG: Risks include: Increased likelihood of fetal growth restriction, low birth weight, and maternal complications (e.g., esophageal rupture, Mallory- Weiss syndrome). * Increased risk of preeclampsia in severe cases. The treatment focuses on reducing complications and providing symptom relief, to help stabilize the patient and minimize any risks to both maternal and fetal health. * A multimodal approach using both pharmacologic and non- pharmacologic methods optimizes outcomes. A) Treat the underlying cause of nausea Incorrect: While it is important to understand the causes and consider any contributing factors, the primary focus in the acute phase of NVP and HG is symptom management and ensuring maternal safety. In many cases, the exact cause of nausea and vomiting is not fully understood, so the focus is on relieving symptoms and managing complications rather than treating an elusive "underlying cause." C) Ensure weight gain Incorrect: Weight gain is not a primary goal in the acute management of NVP and HG. While weight loss can be a concerning side effect, the immediate priority is to address dehydration, electrolyte imbalances, and other acute complications such as nutritional deficiencies and hypovolemia. Weight gain can be addressed once the acute symptoms are under control, but safety and symptom relief come first. D) Prevent preterm labor or early delivery Incorrect: Preterm labor is not a treatment goal for NVP or HG. The condition is not typically associated with preterm labor unless it is severe and leads to complications like electrolyte imbalances or severe dehydration. The goal is not to prevent preterm labor directly but rather to manage acute symptoms, and prevent complications like dehydration and nutrient deficiencies. Early delivery is typically not indicated for HG unless there is a significant threat to maternal or fetal health. Mechanisms Linking NVP/HG to Pre-eclampsia: Placental Dysfunction: HG is associated with abnormal placental development or function, which may contribute to pre-eclampsia. Inflammation and Oxidative Stress: Severe NVP or HG can lead to systemic inflammation, increasing the risk of endothelial dysfunction, a hallmark of pre-eclampsia. Nutritional Deficiencies: Prolonged vomiting leads to deficiencies in vitamins and minerals (e.g., thiamine, magnesium) that may impair vascular health, exacerbating pre-eclampsia risk.

Answer 60

Correct Answer: C) Administer after 10 weeks to avoid cleft lip risk Explanation: C is correct: Corticosteroids like methylprednisolone should only be used after 10 weeks to avoid an increased risk of cleft lip. A is incorrect: Corticosteroids are not recommended before 10 weeks due to cleft lip risk. B is incorrect: Monitoring for gestational diabetes is not the primary concern when using corticosteroids for HG. D is incorrect: The use of corticosteroids is not contraindicated in patients with asthma unless other factors are present. Why Corticosteroids (like methylprednisolone) cause cleft lip risk when used earlier in pregnancy: Corticosteroids, when used in pregnancy, can have teratogenic effects (ability to cause birth defects). One of the risks is that they can disrupt normal fetal development, especially during early pregnancy when major organs, including the face, are forming. Cleft lip (a congenital split or opening in the upper lip) is one of the birth defects associated with the use of corticosteroids in the first trimester (especially before the 10-week mark). This is when the formation of the upper lip and palate is occurring, and exposure to corticosteroids can interfere with this process. Research suggests that corticosteroids used before 10 weeks of pregnancy are associated with a higher risk of cleft lip and cleft palate, likely due to their anti-inflammatory and immunosuppressive effects, which can disrupt normal embryological development. After 10 weeks, the risk of these congenital anomalies is reduced because the critical period for lip and palate formation has passed, and corticosteroids can be used more safely to manage Hyperemesis Gravidarum (HG) or other conditions requiring treatment.

Answer 61

**Correct Answer: B) IV fluids with thiamine supplementation to address dehydration and prevent Wernicke encephalopathy. B) Correct: IV fluids are crucial for correcting dehydration and electrolyte imbalances. Adding thiamine prevents Wernicke encephalopathy, a rare but severe complication of prolonged vomiting.** A) Incorrect: Enteral/parenteral nutrition is reserved for refractory cases due to associated risks such as line sepsis and steatohepatitis, not used as first-line therapy. C) Incorrect: Acid-reducing agents alleviate reflux-associated nausea but do not address the dehydration and nutritional deficiencies in HG. D) Incorrect: Acupuncture (PC 6) and ginger are helpful for mild to moderate NVP but not sufficient for managing severe HG.

Answer 62

**Correct Answer: C) Line sepsis and steatohepatitis. C) Correct: Line sepsis (infection from intravenous lines) and steatohepatitis (inflammation due to fatty liver) are complications of long-term enteral or parenteral nutrition.** A) Incorrect: Enteral or parenteral nutrition is used after dehydration has been corrected; it does not cause dehydration. B) Incorrect: Wernicke encephalopathy is prevented by including thiamine in IV fluids, not a risk from enteral or parenteral nutrition. D) Incorrect: Thiamine overdose is extremely rare and not associated with HG management.

Answer 63

**Correct: C) Obstetrician have expertise and access to advanced diagnostic tools and interventions, making them the most appropriate for high-risk pregnancies.** Obstetricians (OBs) * Description: Specialists in pregnancy, childbirth, and postpartum care; available in hospitals. * Pros: * Expertise in managing high-risk pregnancies. * Access to advanced diagnostic tools and interventions. * Continuous hospital care during delivery. * Cons: * Limited time per appointment. * Higher likelihood of medical interventions (e.g., C-sections). A) Incorrect: Midwives are regulated professionals specialize in low-risk pregnancies at home, in birthing centers, or hospitals. They are not trained to handle complex cases. * Pros: * Personalized, holistic care. * Emphasis on natural birth and minimal interventions. * Continuity of care with the same provider. * Cons: * Not suitable for high-risk pregnancies. * Limited availability in some regions. B) Incorrect: Family doctors are hospital based and can manage low-risk pregnancies but often transfer care to obstetricians for high-risk situations. * Pros: * Familiarity with patient’s medical history. * Can provide ongoing care for the baby and family postpartum. * Balanced approach to interventions. * Cons: * Limited expertise in complex pregnancies. * May transfer care to an OB for complications. D) Incorrect: Doulas provide emotional support during childbirth but do not offer medical care.

Answer 64

Correct Answer: B. Toxoplasmosis Explanation: Toxoplasmosis is the "T" in TORCH, which screens for infections that can cause congenital anomalies during pregnancy. A is incorrect: Influenza is not included in TORCH. It is a respiratory virus but does not typically lead to congenital anomalies. C is incorrect: Tuberculosis, while serious, is not part of TORCH. D is incorrect: HPV is not in TORCH; it primarily affects maternal genital health. Screening for specific illnesses Some infections can cause significant congenital anomalies and complications during pregnancy. * **T**: Toxoplasmosis – caused by Toxoplasma gondii, transmitted through undercooked meat, or cat feces * **O**: Other – includes syphilis, varicella, parvovirus B19, and Zika virus * **R**: Rubella – viral infection causing congenital rubella syndrome * **C**: Cytomegalovirus (CMV) – can cause hearing loss, vision impairment, and developmental delays * **H**: Herpes simplex virus (HSV) – can lead to neonatal herpes, affecting skin, eyes, and central nervous system * These infections and HIV can be directly transmitted from mother to fetus

Answer 65

Correct Answer: C. Weekly Explanation: After 36 weeks, prenatal visits occur weekly to monitor maternal and fetal well-being closely as delivery approaches. A is incorrect: Every 4 weeks applies to early pregnancy (0–28 weeks). B is incorrect: Every 2 weeks is the schedule from 28–36 weeks. D is incorrect: Visits every other day are unnecessary unless complications arise.

Answer 66

**Correct Answer: B. To prevent neonatal GBS infection Explanation: GBS screening identifies maternal colonization to determine if prophylactic antibiotics are needed during labor to prevent neonatal infection. A is incorrect: GBS screening does not diagnose gestational diabetes; glucose testing is done earlier (24–28 weeks). C is incorrect: Screening for anemia is done with a CBC, not GBS culture. D is incorrect: GBS screening does not assess fetal growth.

Answer 67

**Correct Answer: A. <6 ng/mL Explanation: Progesterone levels below 6 ng/mL strongly predict non-viable pregnancy but cannot distinguish between intrauterine and ectopic pregnancies.** Progesterone <6 ng/mL: Associated with a 99% negative predictive value for excluding a viable pregnancy. Such low levels indicate that the pregnancy is highly unlikely to sustain. Progesterone is crucial for maintaining the uterine lining and supporting early pregnancy. Extremely low levels suggest insufficient support for fetal development. Why higher levels (B, C, and D) are incorrect: 10 ng/mL or higher: Typically associated with better pregnancy outcomes. >20 ng/mL or 50 ng/mL: Indicative of normal or robust pregnancy viability and hormone production by the corpus luteum.

Answer 68

Correct Answer: C. To prevent Rh sensitization Explanation: Rh-negative women are at risk of developing antibodies against Rh-positive fetal cells during pregnancy loss, which can affect future pregnancies. Rho(D) immune globulin prevents this. A, B, and D are incorrect: Rho(D) immune globulin is unrelated to gestational diabetes, preeclampsia, or anemia.

Answer 69

**Correct Answer: C. Soaking >2 sanitary pads/hour for 2 consecutive hours Explanation: This is a sign of heavy bleeding that can lead to anemia or signal pregnancy complications.** A is incorrect: Passing small clots may not indicate heavy bleeding. B is incorrect: Light spotting is common and not an emergency. D is incorrect: Cramping without bleeding does not indicate heavy bleeding.

Answer 70

**Correct Answer: C. Every 4 weeks until 28 weeks, every 2 weeks until 36 weeks, then weekly until delivery** Explanation: This is the standard visit schedule for an uncomplicated pregnancy. A and B are incorrect because the spacing between visits does not align with guidelines. D is incorrect because it requires more frequent visits than necessary in early pregnancy.

Answer 71

Correct Answer: B. To assess fetal growth and gestational age Explanation: Fundal height correlates with gestational age from 20 to 34 weeks and helps monitor fetal growth. A, C, and D are incorrect because fundal height does not directly measure these parameters.

Answer 72

**Correct Answer: B. 18–22 weeks Explanation: This is the standard time for the second-trimester anatomy ultrasound to detect major structural abnormalities.** A. Gestational Diabetes Screening Timing: 24–28 weeks. This is the standard time to screen for gestational diabetes in pregnant women. Low-risk women may skip this testing. C. Cell-free DNA Screening Timing: Anytime after 10 weeks (usually first trimester). This test screens for chromosomal abnormalities (e.g., Trisomy 21). D. Nuchal Translucency Measurement Timing: 10–14 weeks (first trimester). This is part of early screening for chromosomal abnormalities and is often paired with other markers.

Answer 73

**C. Attend regular prenatal check-ups to monitor maternal and fetal health: Correct. These visits ensure proper monitoring of fetal growth, maternal health, and the timely management of any complications.** Explanation: A. Gain as much weight as possible to support fetal growth: Incorrect. Excessive weight gain can increase the risk of complications like gestational diabetes and hypertension. B. Avoid all forms of exercise to prevent harm to the fetus: Incorrect. Moderate exercise is beneficial unless contraindicated. D. Avoid eating seafood to prevent mercury exposure: Incorrect. Low-mercury seafood is a valuable source of omega-3 fatty acids, which are beneficial for fetal brain development.

Answer 74

**B. Take frequent breaks to stretch and move during long trips to prevent blood clots Correct: Pregnant women have an increased risk of venous thromboembolism (VTE), so stretching and moving during travel are critical. Air travel is safe until 36 weeks for uncomplicated pregnancies. Recommendations: Seat belts at all times. Hydration and frequent movement to prevent VTE. ** A. Avoid air travel altogether after the first trimester Incorrect: Air travel is generally safe for most pregnancies up to 36 weeks, barring complications like preeclampsia or multiple gestation. C. Avoid all travel after 24 weeks of pregnancy Incorrect: Travel is usually safe for uncomplicated pregnancies until the later stages of the third trimester (after 36 weeks). D. Avoid consuming extra fluids during travel to prevent swelling Incorrect: Staying hydrated is essential during travel, and avoiding fluids could increase the risk of dehydration Car Safety: Major cause of maternal trauma and placental abruption. Seat Belt Use: Lap belt: Low across hips, under uterus. Shoulder belt: Above the fundus, between breasts. Take frequent breaks on long trips.

Answer 75

**B. Regular contractions every 10 minutes or less that do not go away Correct: Regular, frequent contractions can indicate preterm labor, especially if they persist and are accompanied by other symptoms like pelvic pressure or vaginal discharge.** A. Occasional Braxton Hicks contractions Incorrect: Braxton Hicks are normal, irregular, and typically stop with rest or hydration, unlike true labor contractions. Braxton Hicks contractions occur every 10-20 minutes in the late pregnancy. Increase in frequency and intensity as pregnancy progresses. Sometimes mistaken for true labor, but they do not lead to cervical changes. C. Increased fetal movements Incorrect: Increased fetal movements are not a sign of preterm labor; they are generally a sign of a healthy baby. D. Mild cramping relieved by hydration Incorrect: Cramping relieved by hydration is more likely caused by dehydration or Braxton Hicks, not preterm labor.

Answer 76

**B. Diagnosed placenta previa after 28 weeks Correct: Placenta previa increases the risk of severe bleeding, making exercise unsafe in these cases.** A. Mild back pain Incorrect: Mild back pain is common during pregnancy and can often be alleviated with gentle exercise. C. Fatigue during the third trimester Incorrect: Fatigue is common, but exercise can often be modified to suit the patient’s energy levels. D. A history of migraines Incorrect: Migraines are not a contraindication to exercise, though they may require specific management.

Answer 77

**D. Controlled hypertension Correct: Controlled hypertension is a relative contraindication, meaning exercise can often be performed safely with modifications and medical supervision.** A. Pre-eclampsia Incorrect: Pre-eclampsia is an absolute contraindication due to the risks of increased blood pressure and complications. B. Severe anemia Incorrect: Severe anemia is also an absolute contraindication because it can impair oxygen delivery during exercise. C. Persistent second-trimester bleeding Incorrect: Persistent bleeding is an absolute contraindication as it could indicate a serious underlying condition.

Answer 78

Answer: D. All of the above Explanation: Heartburn, leg swelling, and hemorrhoids are all normal physiologic changes during pregnancy due to hormonal shifts, increased blood volume, and physical pressure from the growing uterus.

Answer 79

Answer: B. To assess fetal well-being Explanation: Fetal kick counts are a way to ensure the fetus is active and healthy. At least 10 movements within 2 hours are considered normal.

Answer 80

A. Lie on their right side in a noisy room Incorrect. Lying on the right side does not optimize blood flow to the uterus and placenta as effectively as the left side. A noisy environment may also distract the patient and make it harder to focus on fetal movements. B. Lie on their left side after eating carbohydrates Correct. This is the most accurate method for monitoring fetal movements: Left Side: Improves uteroplacental blood flow, making fetal movements easier to detect. Carbohydrates: Provide a source of energy for the baby, increasing fetal activity. C. Stand up after drinking water Incorrect. Standing may reduce maternal comfort and hinder accurate detection of subtle fetal movements. Drinking water alone does not stimulate fetal activity like carbohydrates do. D. Perform the kick count only at night Incorrect. Fetal movement monitoring can be done at any time of the day. While some babies are more active at night, limiting kick counts to nighttime might not provide consistent results for all patients.

Answer 81

**Answer: A. First trimester Explanation: The first trimester is the most critical period for organogenesis, and teratogenic risks are highest.** Structural and functional anomalies can also arise in the second and third trimesters, necessitating ongoing caution. Nonpharmacologic First Approach: * Initial treatment involves conservative strategies, such as lifestyle changes and supportive therapies, before considering medications.

Answer 82

**A. Physiologic rhinitis Correct. Physiologic rhinitis of pregnancy occurs due to hormonal changes (elevated estrogen and progesterone levels) causing increased nasal vascularity and congestion, leading to symptoms like a runny nose or nasal congestion.** B. Increased lung capacity Incorrect. Lung capacity generally remains stable or slightly increases during pregnancy. It does not contribute to respiratory symptoms. C. Decreased tidal volume Incorrect. Tidal volume (the amount of air inhaled and exhaled per breath) actually increases during pregnancy due to higher oxygen demands. This adaptation does not cause respiratory symptoms. D. Reduced blood volume Incorrect. Blood volume increases significantly during pregnancy (by about 30-50%), not decreases. This adaptation improves oxygen delivery to both the mother and fetus and does not cause respiratory symptoms.

Answer 83

Answer: A. Pulmonary embolism Explanation: Pulmonary embolism is a serious condition that requires immediate evaluation, especially in patients with chest pain and shortness of breath.

Answer 84

**Answer: A. Melasma – Correct. Melasma, also known as the "mask of pregnancy," is a benign skin condition caused by hormonal changes during pregnancy.** B. Psoriasis – Incorrect. Psoriasis is a chronic autoimmune condition and not specific to pregnancy. C. PUPPP – Incorrect. While PUPPP is specific to pregnancy, it is not considered a benign condition due to its significant discomfort. D. Erythema multiforme – Incorrect. This is a rare hypersensitivity reaction and not related to pregnancy-specific changes.

Answer 85

**Answer: A. Presence of a rash and sparing of the umbilicus – Correct. PUPPP is characterized by itchy papules and plaques that spare the umbilicus.** B. Rash covering the umbilicus – Incorrect. Sparing of the umbilicus is a hallmark of PUPPP. C. No rash but severe pruritus – Incorrect. PUPPP includes both pruritus and a visible rash. D. Associated with increased fetal mortality – Incorrect. PUPPP is benign and does not affect pregnancy outcomes.

Answer 86

**B. Intrahepatic Cholestasis of Pregnancy (ICP) – Correct. ICP causes pruritus without a rash and increases the risk of fetal mortality.** A. PUPPP – Incorrect. PUPPP includes a rash and is not associated with increased fetal mortality. B. Intrahepatic Cholestasis of Pregnancy (ICP) – Correct. ICP causes pruritus without a rash and increases the risk of fetal mortality. C. Melasma – Incorrect. Melasma involves skin pigmentation changes and does not cause pruritus. D. Striae gravidarum – Incorrect. Striae are stretch marks and do not cause pruritus or affect fetal outcomes.

Answer 87

Correct Answer: C) Magnesium-containing laxatives Explanation: C) Magnesium-containing laxatives: Risk of hypermagnesemia makes them unsafe during pregnancy. A) Psyllium: A bulk-forming laxative, safe and effective for managing constipation. B) Docusate sodium: A stool softener that is safe for use in pregnancy. D) Polyethylene glycol: An osmotic laxative considered safe due to low bioavailability. ===================== Reasons for Avoiding These Laxatives in Pregnancy: Mineral Oil: Reduces vitamin absorption: Mineral oil can interfere with the absorption of fat-soluble vitamins (A, D, E, and K), which are crucial for maternal and fetal health. Increases bleeding risk: Decreased vitamin K absorption can lead to impaired clotting, increasing the risk of bleeding. Castor Oil: Associated with labor induction: Castor oil can stimulate uterine contractions, which may lead to premature labor or complications during pregnancy. Nausea: It often causes gastrointestinal discomfort, including nausea and cramping, which can worsen a pregnant patient’s condition. Magnesium-Containing Laxatives: Risk of hypermagnesemia: Excess magnesium can cause maternal and fetal complications, including lethargy, respiratory depression, or arrhythmias in severe cases. Lubiprostone: Lacks safety data for pregnancy: There is insufficient evidence regarding the safety of lubiprostone in pregnancy, which raises concerns about potential risks to the fetus. Risks of Long-Term Use of Osmotic and Stimulant Laxatives: Dehydration: Prolonged use can draw too much water into the intestines or overstimulate bowel movements, leading to fluid loss and dehydration, which can adversely affect both the mother and fetus.

Answer 88

**Correct Answer: B) Increased progesterone levels Explanation: B) Increased progesterone levels: Causes smooth muscle relaxation, slowing gastrointestinal transit.** A) Increased uterine size: A mechanical factor but not the primary cause. C) Reduced dietary intake: Can contribute but is not a physiological change. D) Reduced physical activity: May exacerbate constipation but is not a direct cause.

Answer 89

**Correct Answer: B) Hormonal changes and physical factors** Why it's correct: Hormonal changes like altered progesterone, estradiol, melatonin, and cortisol levels, combined with physical factors such as an enlarging uterus and reduced residual lung capacity, are primary contributors to insomnia in pregnancy. Why others are incorrect: A: While poor sleep hygiene can contribute, it is not the primary cause in pregnancy. C: Anxiety and depression can exacerbate insomnia but are not the leading cause in this population. D: Co-sleeping with a snorer is a contributing factor but not the most common cause. more information: Progesterone impacts sleep due to its sedative and muscle-relaxing properties. These effects can paradoxically disrupt normal sleep architecture. Sedation and REM Sleep: Progesterone has a calming effect on the central nervous system by acting on GABA-A receptors, similar to benzodiazepines. This can cause excessive daytime drowsiness and reduce the proportion of restorative REM sleep, leading to poorer sleep quality overall. Muscle Relaxation and Airway Collapse: Progesterone's muscle-relaxant effects can worsen sleep apnea by increasing airway collapsibility during sleep, which disrupts sleep continuity. Frequent Nocturnal Urination: Progesterone's effect on smooth muscle relaxation in the bladder may lead to increased nighttime urination, further fragmenting sleep.

Answer 90

**Correct Answer: C) Sleep hygiene and behavioral therapies** Why it's correct: Non-pharmacologic approaches, such as maintaining sleep hygiene, Cognitive Behavioral Therapy for Insomnia (CBT-I), and relaxation techniques, are the first-line treatments due to their safety and efficacy. Why others are incorrect: A: Melatonin lacks sufficient evidence for safety in pregnancy. B: Benzodiazepines are avoided due to risks like floppy infant syndrome and preterm birth. D: Diphenhydramine may only be used as a second-line option under medical supervision.

Answer 91

**Correct Answer: B) Limiting blue light exposure before sleep** Why it's correct: Reducing blue light exposure 2 hours before bedtime helps regulate melatonin production and improves sleep quality. Why others are incorrect: A: Exercise during the day promotes better sleep; avoiding it is counterproductive. C: Eating a heavy meal before bed can worsen GERD, a common pregnancy-related condition, and disrupt sleep. D: Sleeping with the TV on disrupts the sleep environment.

Answer 92

**Correct Answer: B) Asymmetric leg swelling and tenderness** Why it's correct: Asymmetric edema, pain, and tenderness are hallmark symptoms of DVT. Pregnancy-related DVT typically presents with these localized symptoms. Why others are incorrect: A: Symmetric leg edema is common in pregnancy but not specific to DVT. C: Chest pain and tachycardia suggest pulmonary embolism, not DVT. D: Hemoptysis is more indicative of pulmonary embolism than DVT.

Answer 93

part 1 **Correct Answer: C) Severe eczema** Why it's correct: Severe eczema is unrelated to VTE risk. Why others are incorrect: A, B, and D: Age >35, obesity, and a history of thrombophilia are well-documented risk factors for VTE in pregnancy. part 2: **A) Correct: Women with recurrent pregnancy loss may have an underlying thrombophilia, increasing the risk of clot formation.** B) Incorrect: Gestational diabetes is not directly linked to thrombophilia screening. C) Incorrect: While maternal age over 35 is a general pregnancy risk factor, it is not an indication for thrombophilia screening. D) Incorrect: Without a personal or family history of clotting disorders, thrombophilia screening is not routinely recommended.

Answer 94

**Correct Answer: C) Increased energy levels** Why C is correct: Increased energy levels are not associated with insomnia or pregnancy; this contrasts with common symptoms like fatigue, difficulty falling asleep, and frequent awakenings. Why the others are incorrect: A) Difficulty falling asleep is a hallmark symptom of insomnia. B) GERD is a common condition that causes nocturnal awakenings during pregnancy. D) Restless legs syndrome (RLS) frequently co-occurs with insomnia in pregnant individuals.

Answer 95

Correct Answer: C) Progesterone increases during pregnancy, affecting sleep stages and causing fragmented sleep due to its sedative and muscle-relaxing effects. Why the others are incorrect: A) Melatonin levels tend to rise in pregnancy, but this generally helps regulate sleep rather than disrupting it. B) Estradiol typically increases during pregnancy; it is not known to directly cause sleep disturbances. D) Cortisol generally increases during pregnancy, but its role in sleep disruption is secondary compared to progesterone.

Answer 96

**Correct Answer: B) Non-Hispanic Black patients** Why B is correct: Research shows that non-Hispanic Black patients have a higher risk of pregnancy-related death from thrombotic embolism due to healthcare disparities and possibly genetic predispositions. Why the others are incorrect: A), C), and D): These populations have lower documented risks compared to non-Hispanic Black patients.

Answer 97

**Correct Answer: C) Hypercoagulability** Why C is correct: Pregnancy increases clotting factors and reduces natural anticoagulants like protein S, leading to a hypercoagulable state. Why the others are incorrect: A) Vascular injury occurs during delivery, not directly due to hormonal changes. B) Venous stasis is caused by uterine compression of veins, not hormones. D) While anticoagulants like protein S decrease, this is part of the hypercoagulable state, not a standalone factor.

Answer 98

**Correct Answer: B) Reduces symptoms and risk of DVT** Compression stockings help reduce venous stasis, alleviating symptoms and preventing DVT. Why the others are incorrect: A) Stockings prevent DVT, which indirectly lowers PE risk but doesn’t prevent PE directly. C) Compression stockings do not affect oxygenation. D) Anticoagulants remain necessary for effective VTE management; stockings are an adjunct therapy.

Answer 99

1. Vena Cava Filters How They Work: Vena cava filters are small, cage-like devices placed in the inferior vena cava (IVC) to capture emboli (blood clots) traveling from the lower extremities toward the lungs. This prevents the emboli from causing a pulmonary embolism (PE). Indications: Used when anticoagulation therapy is contraindicated (e.g., due to bleeding risks). May also be used in patients with recurrent VTE despite anticoagulant treatment. Limitations and Risks: Filters do not treat existing clots, and they do not prevent clot formation at the source. Long-term use may increase the risk of thrombosis around the filter itself. 2. Compression Stockings How They Work: Compression stockings apply graduated pressure to the legs, with the highest pressure at the ankle and decreasing pressure up the leg. This mechanism helps: Promote Venous Return: The stockings improve blood flow from the legs back to the heart by compressing superficial veins and reducing venous stasis. Prevent Venous Dilation: Compression reduces the pooling of blood in veins, which decreases the risk of clot formation. Indications: To reduce DVT risk in pregnant patients or others with high VTE risk (e.g., prolonged immobility). To alleviate symptoms of swelling, pain, and heaviness in cases of chronic venous insufficiency or post-thrombotic syndrome. Limitations: Compression stockings are an adjunct therapy and cannot replace anticoagulants in treating acute VTE.

Answer 100

**Correct Answer: C) While cesarean deliveries are a complication of GDM, they are not a risk factor for developing the condition.** A. High BMI (≥25 or ≥23 for Asian descent): Incorrect. High BMI is a well-established risk factor for GDM. B. Ethnicity (e.g., Native American, African American): Incorrect. Certain ethnic backgrounds have a higher risk of developing GDM. D. Family history of diabetes: Incorrect. A family history of diabetes is a significant risk factor for GDM. The prevalene of gestational diabetes (GDM) in pregnancies in the U.S. 2–10%.

Answer 101

Correct Answer: C. 50-g Glucose Challenge Test (GCT): Correct. The non-fasting GCT is the primary method for universal GDM screening. A. Fasting plasma glucose (FPG) test: Incorrect. This is part of diagnostic criteria but not the initial screening method. B. 75-g Oral Glucose Tolerance Test (OGTT): Incorrect. This is a diagnostic test performed after abnormal GCT results. D. HbA1c measurement: Incorrect. HbA1c is not routinely used for screening GDM. =============================== **Screening for GDM Universal Screening** * When: All pregnant patients screened at 24–28 weeks gestation. * High-Risk Patients: Early screening at the first prenatal visit to rule out pre-existing diabetes. Diagnostic Strategies * Non-fasting 50-g GCT with plasma glucose (PG) measured 1 hour later.<7.8 mmol/L: No further testing required. * 7.8–11.0 mmol/L: Proceed to diagnostic 75-g Oral Glucose Tolerance Test (OGTT). * ≥11.1 mmol/L: Gestational Diabetes Mellitus (GDM) is diagnosed. **Step 2: 75-g Oral Glucose Tolerance Test (OGTT)** * Conducted for GCT values 7.8–11.0 mmol/L. * Measure fasting PG (FPG), 1-hour PG, and 2-hour PG. Diagnostic Criteria (Any 1 Value Met or Exceeded Diagnoses GDM): 1.Fasting PG (FPG): ≥5.3 mmol/L 2.1-hour PG: ≥10.6 mmol/L 3.2-hour PG: ≥9.0 mmol/L

Answer 102

Correct Answer: D) Medical Nutrition Therapy: Correct. Dietary and lifestyle modifications are the first-line treatment for GDM. A. Metformin: Incorrect. Metformin is a treatment option, it is not first-line due to its ability to cross the placenta. The starting dose is 500mg/day and titrated as needed. B. Insulin: Incorrect. Insulin is the first-line pharmacologic therapy but is not the first step in managing GDM. Insulin does not cross the placenta and is the safest option * Typical dosing regimens: * Short-acting insulin (e.g., lispro, aspart): Controls postprandial glucose. * Long-acting insulin (e.g., NPH, glargine): Manages fasting glucose. * Dosages adjusted based on glucose patterns and gestational changes. C. Glyburide: Incorrect. Glyburide is a last-line option and is associated with neonatal hypoglycemia and macrosomia. This is considered last line if insulin or metformin are not options. ================================== **Follow-Up Screening:** * Repeat screening at 24-28 weeks gestation if: * Initial test results were normal. * GDM was missed earlier. * Clinical suspicion of late-onset GDM arises. **Nonpharmacologic Management** * Medical Nutrition Therapy: * Dietary plans: * 175 g carbs, 71 g protein, 28 g fiber daily. * Emphasize nutrient-dense carbohydrates, avoid simple sugars. * Target normal blood glucose levels for optimal maternal and fetal outcomes. * Physical Activity: * Regular exercise reduces insulin resistance and may delay the need for medication. Nonpharmacologic Management Blood Glucose Monitoring * Target Levels: * Fasting: <5.3 mmol/L. * Postprandial: * 1 hour: <7.8 mmol/L. * 2 hours: <6.7 mmol/L.

Answer 103

**A (Correct): Fetal growth monitoring evaluates the growth rate and amniotic fluid volume, critical for detecting macrosomia or growth restriction** B (Incorrect): Fetal growth monitoring does not determine the continuation of pregnancy; this depends on maternal and fetal health. C (Incorrect): While fetal size can reflect glycemic control, this is not the primary goal of growth monitoring. D (Incorrect): Cesarean delivery is considered based on clinical factors, but fetal growth monitoring alone is not sufficient for this decision.

Answer 104

**C (Correct): Induction of labor is typically recommended between 38–40 weeks for women with GDM, depending on glycemic control and co-morbidities.** A (Incorrect): Induction at 34–36 weeks is premature unless there are severe complications. B (Incorrect): 36–38 weeks is earlier than the standard recommendation for well-controlled GDM without complications. D (Incorrect): Delaying delivery beyond 40 weeks increases the risk of complications in GDM.

Answer 105

**B (Correct): For patients with normal or low risk postpartum glucose tolerance, screening every 1–3 years is recommended to monitor for type 2 diabetes. Test by either A1c, fasting plasma glucose, or OGTT (using nonpregnant thresholds). ** A (Incorrect): Annual screening is suggested only for patients with impaired glucose tolerance, by Annual A1c or fasting plasma glucose. C (Incorrect): Regular screening is essential, even without symptoms of hyperglycemia. D (Incorrect): Postpartum glucose screening remains important to assess long-term diabetes risk. Postpartum glucose screening every 1–3 years is recommended because: Increased risk of type 2 diabetes: Women with a history of GDM have a 7- to 10-fold increased risk of developing type 2 diabetes later in life. Even if initial postpartum glucose levels are normal, this risk persists for decades. Delayed onset: Type 2 diabetes often develops gradually, with insulin resistance increasing over time. Regular screening allows for early detection and intervention. Guidelines: The American Diabetes Association (ADA) and other clinical guidelines recommend screening every 1–3 years to monitor for this progression, using fasting glucose, HbA1c, or an oral glucose tolerance test (OGTT).

Answer 106

Answer: B. It reduces insulin resistance in peripheral tissues. A (Incorrect): Physical activity may influence weight gain but is not the primary mechanism in GDM management. B (Correct): Regular exercise improves insulin sensitivity, reducing glucose levels and delaying the need for medications. C (Incorrect): Exercise does not affect carbohydrate absorption. D (Incorrect): Fetal glucose requirements are not directly influenced by maternal physical activity.

Answer 107

Answer: D. It reduces the risk of type 2 diabetes in the mother. D (Correct): Breastfeeding has been shown to reduce the mother’s long-term risk of developing type 2 diabetes. A (Incorrect): Breastfeeding does improve glucose metabolism, but the main benefit is reducing the risk of developing type 2 diabetes. B (Incorrect): Breastfeeding does not replace the need for postpartum glucose tolerance testing. C (Incorrect): Breastfeeding provides benefits for both the mother and infant. ================= Breastfeeding reduces the risk of type 2 diabetes by: Improving glucose metabolism: Lactation uses significant amounts of glucose for milk production, lowering blood sugar levels and reducing insulin resistance. Hormonal effects: Prolactin and oxytocin, hormones involved in lactation, play a role in improving pancreatic function and insulin sensitivity. Long-term metabolic changes: Breastfeeding helps reset metabolic pathways after pregnancy, reducing the risk of future diabetes.

Answer 108

**C) The need for further evaluation – Correct. A score of ≤4 indicates possible fetal compromise and requires follow-up.** A) Low risk of fetal distress – Incorrect. A low BPP score suggests potential distress. B) Normal fetal well-being – Incorrect. A normal BPP score is 8–10. D) Immediate delivery is unnecessary – Incorrect. A score of ≤4 may indicate the need for urgent delivery.

Answer 109

✅ Correct Answer: B) Increased coagulation factors and reduced fibrinolysis 📝 Explanation: Pregnancy is a prothrombotic state due to increased clotting factors and decreased fibrinolysis, increasing the risk of VTE. ❌ Incorrect Answers: A) Increased fibrinolysis would reduce clot formation, which is opposite to what happens in pregnancy. C) Decreased coagulation factors would lower VTE risk, which is not the case. D) Pregnancy leads to venous stasis, not increased venous return, contributing to clot formation.

Answer 110

**A) Correct: Preterm labor is diagnosed when regular contractions lead to cervical effacement or dilation before 37 weeks.** B) Incorrect: Preterm contractions can occur before or after 37 weeks but do not cause cervical changes. C) Incorrect: Preterm labor involves contractions that lead to cervical changes. D) Incorrect: Preterm contractions can be painful or painless, but they do not cause cervical changes.

Answer 111

**B) Correct: Labor is initiated when progesterone decreases and estrogen and prostaglandins increase, leading to increased uterine contractility.** A) Incorrect: Progesterone dominance maintains pregnancy; labor starts when this dominance decreases. C) Incorrect: Estrogen levels increase before labor, not decrease. D) Incorrect: Oxytocin plays a role but works alongside prostaglandins and estrogen to promote labor. ================================ PRE-LABOUR CERVICAL CHANGES * Fetal head engagement: * Fetus settles into the pelvic brim in preparation for labor. * Cervical ripening: * Over days to weeks, the cervix begins to: * Soften (increased hydration and collagen breakdown). * Efface (thinning of cervical tissue). * Dilate (gradual opening of the cervical canal). **Pre-Labor Changes** * Cervical Ripening: * Biochemical connective tissue changes occur before active labor. * Softening, thinning (effacement), and initial opening (dilation) of the cervix. **Myometrial Activation:** * Gradual increase in uterine excitability and contractility. * Shift from progesterone dominance (which maintains pregnancy) to estrogen and prostaglandin activity (which promote **Progesterone’s Role in Pregnancy Maintenance** * Delays Parturition by: * Reducing myometrial activity * Maintaining cervical competency * Evidence: Administration of progesterone prolongs pregnancy in some species (Challis, 1994)

Answer 112

**B) Correct: The bloody show occurs as the cervix dilates and effaces, causing the release of the mucus plug with blood-tinged mucus.** A) Incorrect: Uterine rupture is a medical emergency and is not the same as bloody show. C) Incorrect: Placenta previa causes painless vaginal bleeding, but it is unrelated to bloody show. D) Incorrect: Bloody show is normal and does not require urgent medical attention unless there is excessive bleeding. BLOODY SHOW AND MUCOUS PLUG * Mucus plug: Thick mucus accumulated in the cervical canal during pregnancy. * As the cervix effaces and dilates, the mucus plug is released. * Bloody show: Small amount of blood-tinged mucus from the vagina, marking imminent labor. * Not all individuals experience bloody show, but it often precedes labor by hours to days.

Answer 113

**B) Correct – In low-risk pregnancies, intermittent auscultation of the fetal heart rate (FHR) should be done every 30 minutes during the active phase of the first stage of labor.** A) Incorrect – Every 15 minutes is recommended during the second stage of labor, not the first stage. C) Incorrect – Every hour would be too infrequent and does not align with standard monitoring guidelines. D) Incorrect – Continuous fetal monitoring is only required for high-risk pregnancies or concerning fetal status. ================================== **Why is Fetal Heart Rate (FHR) Monitoring Every 30 Minutes in the First Stage and Every 15 Minutes in the Second Stage?** FHR monitoring is more frequent in the second stage of labor because: Increased stress on the fetus: The second stage involves active pushing and uterine contractions that can cause cord compression and temporary oxygen deprivation, increasing the risk of fetal distress. Higher risk of fetal hypoxia: As the baby descends, the placental blood supply may be temporarily reduced, making frequent monitoring necessary. Intervention readiness: Since the baby is closer to delivery, early detection of fetal distress allows for immediate interventions, such as operative delivery (forceps, vacuum) or emergency cesarean section. In contrast, in the first stage of labor (when the cervix is dilating), contractions are not yet as forceful, and fetal oxygenation is generally stable, so monitoring every 30 minutes is sufficient in low-risk pregnancies.

Answer 114

**A) Correct – The second stage of labor begins when the cervix is fully dilated (10 cm) and ends with the delivery of the baby.** B) Incorrect – Regular uterine contractions occur in both the first and second stages of labor, so they are not unique to the second stage. C) Incorrect – Crowning (when the fetal head becomes visible at the vaginal opening) occurs near the end of the second stage, but it is not what defines its beginning. D) Incorrect – The rupture of membranes can occur at different points and is not a defining feature of the second stage.

Answer 115

**B) Correct – Epidural anesthesia can prolong the second stage of labor by reducing maternal pushing effort and sensation. The upper limit for the second stage with an epidural is 3.6 hours in nulliparous women and 2 hours in multiparous women.** A) Incorrect – Multiparity (having had previous deliveries) shortens the second stage of labor. C) Incorrect – Strong maternal pushing efforts would help speed up labor rather than prolong it. D) Incorrect – High fetal station (not low) would prolong labor because it indicates the baby has not descended into the birth canal yet.

Answer 116

**C) Correct – A gush of blood is a key sign of placental separation as blood is released from the placental site.** A) Incorrect – The uterus actually becomes firmer, not relaxed, as the placenta separates. B) Incorrect – The umbilical cord lengthens (not shortens) as the placenta detaches and moves toward the vaginal opening. D) Incorrect – There is no direct association between placental separation and an increase in maternal blood pressure.

Answer 117

**A) Correct – Uterine atony (failure of the uterus to contract after delivery) is the most common cause of postpartum hemorrhage (PPH). Atonic uterus leads to continued bleeding from the placental site.** B) Incorrect – The mucus plug has no direct role in postpartum hemorrhage. C) Incorrect – Oxytocin actually prevents postpartum hemorrhage by stimulating uterine contractions. D) Incorrect – While epidurals can prolong labor, they do not directly cause postpartum hemorrhage.

Answer 118

**D) Correct – An IUPC is the most accurate method for measuring true contraction strength (in mmHg) and is useful for cases with suspected labor abnormalities or oxytocin augmentation.** A) Incorrect – An external tocodynamometer measures frequency and duration, but not strength of contractions. B) Incorrect – Maternal pain is subjective and does not always reflect contraction strength (e.g., some women may have silent contractions). C) Incorrect – Palpation provides a rough estimate of contraction strength but is not precise.

Answer 119

**C) Correct – 0 station means the fetal presenting part is aligned with the ischial spines. This marks the transition from engagement to active descent.** A) Incorrect – -3 station means the fetal head is still high in the pelvis, about 3 cm above the ischial spines. B) Incorrect – -1 station means the fetal head is slightly above the ischial spines but has not yet reached 0. D) Incorrect – +3 station means the fetal head is low in the birth canal and near crowning.

Answer 120

**B) Correct – Arrest of labor in the second stage is defined as ≥ 4 hours with adequate contractions or ≥ 6 hours with inadequate contractions and no descent of the fetus. This may require assisted delivery or cesarean section.** A) Incorrect – This describes first-stage arrest (failure to dilate). C) Incorrect – Labor duration varies, and 24 hours is not the cutoff for diagnosing arrest. D) Incorrect – Contractions usually resume after membrane rupture; labor arrest is not diagnosed based on lack of contractions alone. **Second Stage Dystocia** * Prolonged second stage: * Nulliparous: >3 hrs without epidural, >4 hrs with epidural. * Multiparous: >2 hrs without epidural, >3 hrs with epidural. * Management: * Oxytocin augmentation. * Manual rotation for malpositioned fetus. * Operative vaginal delivery (vacuum, forceps) if contractions/pushing are ineffective.

Answer 121

**C) Correct – Early skin-to-skin contact actually reduces neonatal hypoglycemia by promoting early breastfeeding and stabilization of glucose levels.** A) Incorrect – Skin-to-skin contact helps regulate the newborn’s body temperature. B) Incorrect – It enhances bonding by increasing oxytocin levels in both mother and baby. D) Incorrect – It leads to higher breastfeeding rates and longer breastfeeding duration.

Answer 122

**Answer: B) The period from delivery of the baby and placenta to approximately 6 weeks postpartum** Correct: The puerperium period lasts about 6 weeks postpartum, during which maternal physiological and emotional adjustments occur. Incorrect: A) Only the immediate postpartum period is covered, not the full puerperium. C) The last trimester is part of pregnancy, not postpartum. D) This describes labor, not the postpartum phase.

Answer 123

Answer: C) Pelvis Correct: The "3 Ps" of labor mechanics are Power (contractions), Passenger (fetus), and Passage (pelvic and soft tissues). Incorrect: A, B, and D are all part of the 3 Ps. C (Pelvis) is part of the passage but is not separately listed as one of the 3 Ps. =================================== **PARTURITION** The “3 Ps” of Labor Mechanics * Successful vaginal delivery depends on three mechanical factors: * 1. Power (Uterine Contractions) * Strength, frequency, and coordination of myometrial contractions. * Driven by oxytocin and prostaglandins. * 2. Passenger (Fetus) * Fetal size, position, and presentation affect ease of delivery. * Head molding and fetal rotations help the fetus navigate through the birth canal. * 3. Passage (Maternal Pelvis & Soft Tissues) * Shape and dimensions of the bony pelvis influence delivery. * Cervical and vaginal tissue flexibility play a role.

Answer 124

A) Engagement, descent, flexion, internal rotation, extension, external rotation, expulsion B) Flexion, engagement, internal rotation, descent, extension, expulsion, external rotation C) Engagement, flexion, descent, external rotation, extension, expulsion, internal rotation D) Descent, engagement, flexion, internal rotation, external rotation, expulsion, extension Answer: A) Engagement, descent, flexion, internal rotation, extension, external rotation, expulsion Correct: This is the correct order of movements allowing fetal passage through the birth canal. Incorrect: B, C, and D mix up the correct sequence of fetal movements. This is the proper sequence of movements that allow the baby to pass through the birth canal efficiently. Engagement – The fetal head enters the pelvic inlet. Descent – The head moves downward through the pelvis. Flexion – The chin tucks in, allowing the smallest head diameter to pass. Internal Rotation – The head rotates to align with the pelvis. Extension – The head moves up as it passes under the pubic bone. External Rotation – The head rotates to realign with the body. Expulsion – The rest of the baby is delivered. * Delivery proceeds along the line of least resistance by adapting the smallest diameters of the presenting part to the birth canal.

Answer 125

**Answer: C) Engagement occurs when the presenting part reaches the pelvic inlet.** Correct: Engagement is defined as the descent of the fetal presenting part into the pelvic inlet. A is incorrect because the presenting part reaches the pelvic inlet, not the pelvic outlet, during engagement. B is incorrect because engagement occurs earlier in primigravidas, often in the last two weeks of pregnancy. In multiparas, it typically happens at the onset of labor. D is incorrect because in primigravidas, engagement can occur before labor begins.

Answer 126

Answer: A) Descent begins after engagement and continues until birth. Correct: Descent is a gradual process that begins after engagement and continues until delivery. B is incorrect because in multiparas, descent and engagement often occur together at the onset of labor. C is incorrect because descent continues until the fetus is fully delivered, not just to the midpelvis. D is incorrect because descent is active, facilitated by uterine contractions, maternal effort, and gravity.

Answer 127

**Answer: A) To allow the fetal head to pass through the pelvis with the smallest possible diameter.** Correct: Flexion allows the fetal chin to tuck toward the chest, reducing the head's diameter for an easier passage. B is incorrect because flexion does not specifically align the occiput with the maternal spine. C is incorrect because extension occurs later, during delivery. D is incorrect because flexion aids in head passage, not shoulder delivery.

Answer 128

Answer: A) The fetal head moves from a transverse to an anteroposterior position. Correct: Internal rotation reorients the fetal head to align with the pelvic outlet. B is incorrect because shoulder rotation occurs during external rotation, not internal rotation. C is incorrect because realignment of the head with the body occurs during external rotation (restitution). D is incorrect because the occiput typically moves anteriorly toward the pubic symphysis, not toward the sacrum. ================================== * Internal rotation reorients the fetal head from its original position. * The occiput moves anteriorly toward the symphysis pubis. * As the head descends into the midpelvis, rotation ensures that the sagittal suture aligns with the anteroposterior diameter of the pelvis.

Answer 129

**Answer: B) The fetal head moves under the pubic symphysis and emerges from the birth canal.** Correct: During extension, the head moves outward as it passes beneath the pubic bone. A is incorrect because flexion (not extension) is when the fetal head tucks into the chest. C is incorrect because external rotation (not extension) realigns the fetal head with the body. D is incorrect because internal rotation (not extension) is when the fetal head moves into the anteroposterior position. ================================= * Extension occurs as the fetus descends to the introitus. * Downward uterine pressure and resistance from the pelvic floor cause the head to deflex. * The "ring of fire" sensation occurs as the fetal head distends the perineum and vaginal opening. * Spontaneous delivery is imminent at this stage.

Answer 130

**Answer: A) It allows the head to align with the body to facilitate shoulder delivery.** Correct: After the head is delivered, external rotation realigns it with the shoulders, allowing easier passage of the shoulders. B is incorrect because external rotation does not return the head to a transverse position—it realigns with the shoulders. C is incorrect because head extension (not external rotation) helps the head pass under the pubic symphysis. D is incorrect because external rotation happens after head delivery, not before engagement or descent.

Answer 131

Answer: B) They regulate uterine contractions and membrane rupture. Correct: Prostaglandins stimulate cervical ripening and contribute to uterine contractions. A is incorrect because prostaglandins do relax the cervix but stimulate contractions, not inhibit them. C is incorrect because prostaglandins do not suppress oxytocin—they work with it to enhance contractions. D is incorrect because progesterone (not prostaglandins) maintains pregnancy by stabilizing the myometrium. How It Works in Labor: Before Rupture: The amnion produces prostaglandins (PGE₂ and PGF₂α) near term. These prostaglandins soften the cervix and increase uterine contractions, helping to initiate labor. After Rupture (Water Breaking): Once the amniotic sac ruptures, more prostaglandins may be released. This can further stimulate contractions, helping labor progress. The loss of the amniotic sac also reduces a barrier between the fetus and maternal tissues, allowing for more direct hormonal interactions that support delivery. Key Takeaway: The amnion produces prostaglandins before it ruptures to help start labor. After rupture, prostaglandins may continue to influence labor, but their production is not solely dependent on rupture—they are already at work before that happens!

Answer 132

**Answer: C) Low-risk pregnancy at term.** Correct: A low-risk pregnancy does not warrant a cesarean section unless complications arise. A is incorrect because malpresentation (e.g., breech) is a common indication for C-section. B is incorrect because dystocia (failure to progress) is a frequent reason for C-section. D is incorrect because non-reassuring fetal heart rate patterns may indicate fetal distress, requiring a C-section.

Answer 133

Answer: C) Elective repeat cesarean delivery ✅ Correct: Elective repeat cesarean deliveries are one of the most common indications, as many patients with a previous cesarean opt for a repeat surgery rather than attempting a vaginal birth after cesarean (VBAC). ❌ A) Fetal macrosomia: While a large fetus can be an indication for a cesarean, it is not the most common reason. Many macrosomic babies can still be delivered vaginally. ❌ B) Malpresentation: Malpresentation (e.g., breech) is a reason for cesarean delivery but is less common than elective repeat cesareans. ❌ D) Placental abruption: This is an obstetric emergency requiring immediate intervention, but it is a less frequent indication for cesarean delivery overall.

Answer 134

Answer: B) Endomyometritis ✅ Correct: Endomyometritis (infection of the uterine lining and muscle) is a common postoperative complication of cesarean sections, especially if prophylactic antibiotics are not given. ❌ A) Pulmonary fibrosis: This is a chronic lung disease and not a known complication of cesarean deliveries. ❌ C) Mitral valve prolapse: A heart valve disorder that is unrelated to cesarean deliveries. ❌ D) Preeclampsia: Preeclampsia is a pregnancy-related condition, but it occurs before delivery. It is not a postoperative complication. **Postoperative Complications of Cesarian Delivery:** * Pain * Endomyometritis * Wound separation/infection * Urinary tract infections * Gastrointestinal issues * Deep venous thrombosis * Septic thrombophlebitis More on why this happens: 1. Pain Why it happens: Cesarean delivery involves an abdominal incision, cutting through multiple layers of tissue, including skin, fascia, muscle, and the uterus. This leads to significant postoperative pain, especially in the first few days. Impact: Pain can limit mobility, delay recovery, and increase the risk of complications such as deep vein thrombosis (DVT) due to reduced movement. 2. Endomyometritis (Uterine Infection) Why it happens: The uterus is exposed to bacteria during surgery, and the incision in the uterus creates an entry point for infection. Endomyometritis (infection of the endometrium and myometrium) is more common in cesarean deliveries than in vaginal births. Risk factors: Prolonged labor, prolonged rupture of membranes, multiple vaginal exams, and lack of prophylactic antibiotics increase the risk. Symptoms: Fever, uterine tenderness, foul-smelling lochia (postpartum vaginal discharge). 3. Wound Separation/Infection Why it happens: The surgical incision is vulnerable to infection, particularly if there is poor healing due to obesity, diabetes, or poor postoperative care. Signs: Redness, swelling, warmth, discharge, or opening of the incision. Impact: Can lead to prolonged hospital stay, use of antibiotics, and need for wound care interventions. 4. Urinary Tract Infections (UTIs) Why it happens: A urinary catheter is often used during and after surgery, increasing the risk of bacterial introduction into the urinary tract. Postoperative immobility and dehydration can also contribute to urinary stasis, increasing infection risk. Symptoms: Painful urination, urgency, fever, and lower abdominal discomfort. 5. Gastrointestinal Issues Why it happens: Abdominal surgery can slow down gastrointestinal motility, leading to issues such as bloating, constipation, or ileus (temporary paralysis of the intestines). Risk factors: Use of opioids for pain management can further slow gut motility. Impact: Can delay recovery and cause discomfort, requiring interventions like stool softeners, hydration, and early ambulation. 6. Deep Venous Thrombosis (DVT) Why it happens: Surgery, combined with postpartum physiological changes, increases the risk of blood clot formation. Reduced mobility after a cesarean further contributes to venous stasis, increasing the likelihood of DVT. Risk factors: Obesity, smoking, history of clotting disorders, prolonged immobility. Impact: If a clot travels to the lungs (pulmonary embolism), it can be life-threatening. 7. Septic Thrombophlebitis Why it happens: This is an infection-related clotting disorder where bacteria cause inflammation in veins, leading to clot formation. It typically affects pelvic veins following cesarean delivery. Symptoms: Fever that does not resolve with antibiotics, lower abdominal pain, and signs of systemic infection. Treatment: Includes IV antibiotics and sometimes anticoagulation therapy. Conclusion These complications are primarily related to surgical trauma, infection risks, reduced mobility, and physiological stress associated with cesarean delivery. Proper postoperative care, including pain management, ambulation, hydration, prophylactic antibiotics, and thromboprophylaxis, helps reduce these risks.

Answer 135

Answer: A) Early ambulation ✅ Correct: Early ambulation helps prevent deep vein thrombosis (DVT) and other thromboembolic events in postpartum patients. ❌ B) High-dose anticoagulation therapy: Anticoagulants are used selectively in patients at higher risk for thromboembolism but are not routinely given in all cases. ❌ C) Strict bed rest for 48 hours: Prolonged bed rest increases the risk of thromboembolism rather than preventing it. ❌ D) Delayed ambulation until pain subsides: Pain management should be used to encourage early ambulation, rather than delaying movement. **Cesarian Delivery Thromboembolism Prophylaxis:** Thromboembolism Prophylaxis: * Early ambulation is recommended for women without additional risk factors. * For those with additional risk factors, mechanical or pharmacologic prophylaxis should be considered.

Answer 136

Answer: B) Avoiding non-medically indicated labor inductions ✅ Correct: Inductions without medical necessity can lead to an increased likelihood of cesarean delivery, especially if the cervix is not favorable. ❌ A) Routine induction of labor at 39 weeks: While some studies suggest induction at 39 weeks may reduce cesarean rates in some populations, routine induction is not a universal strategy to prevent cesarean delivery. ❌ C) Performing early amniotomy in all labors: Early rupture of membranes can increase the risk of labor complications and may lead to an unnecessary cesarean. ❌ D) Using general anesthesia instead of regional anesthesia: Regional anesthesia (e.g., epidurals, spinal anesthesia) is preferred for cesarean deliveries due to lower maternal and neonatal risks compared to general anesthesia. =============================== Prevention Strategies: * Avoid non–medically indicated labor inductions * Avoid amniotomy * Utilize continuous labor support, such as doulas

Answer 137

Answer: A) Success rates for TOLAC are approximately 75% ✅ Correct: About 75% of women who attempt a TOLAC successfully achieve a vaginal birth after cesarean (VBAC). ❌ B) TOLAC is contraindicated in all cases of prior cesarean delivery: This is incorrect—TOLAC is a viable option for many women, depending on individual risk factors. ❌ C) TOLAC is risk-free for both mother and baby: While it can be safe, TOLAC carries risks such as uterine rupture, so careful assessment is needed. ❌ D) TOLAC is only attempted if the baby is in breech presentation: TOLAC is not attempted for breech presentation; in such cases, a cesarean is typically preferred unless an external cephalic version is successful.

Answer 138

**Correct Answer: B) After 24 hours Explanation: The dressing is typically removed after 24 hours to allow for proper wound assessment and to reduce the risk of infection.** A) After 12 hours – Too early, as the wound is still fresh. C) After 48 hours – Delayed removal can trap moisture and increase the risk of infection. D) After 72 hours – Prolonged dressing use is unnecessary unless there are specific complications.

Answer 139

**Correct Answer: B) Remove clips after 3 days, then apply tape strips Explanation: Transverse incisions generally heal well and have lower tension, so clips can be removed after 3 days and reinforced with tape strips.** A) 24 hours – Too early; wound closure is not yet secure. C) 5–7 days – More appropriate for vertical incisions, which are under more tension. D) 10 days – Unnecessarily prolonged, increasing the risk of wound irritation. Why does orientation of incision effect the speed of healing? 1. Muscle Fiber Orientation The abdominal muscles (rectus abdominis) run vertically. A vertical incision cuts along the midline, disrupting these fibers, making it harder for the wound to remain closed under natural muscle tension. A transverse incision follows the direction of muscle fibers, minimizing disruption and reducing tension on the wound. 2. Gravity’s Effect The abdominal wall naturally expands and contracts with breathing, posture changes, and intra-abdominal pressure shifts (e.g., coughing, standing). A vertical incision is more prone to being pulled apart due to these forces. A horizontal incision, especially in the lower abdomen (e.g., Pfannenstiel), is less affected by gravity and abdominal pressure. 3. Wound Healing & Scar Formation Transverse incisions heal better due to lower tension and better blood supply. Vertical incisions have higher rates of dehiscence (wound reopening) and herniation since they are under greater mechanical stress. This is why vertical incisions require a longer duration for clip removal (5–7 days), whereas transverse incisions heal faster and allow clip removal after 3 days.

Answer 140

**Correct Answer: B) Call emergency services immediately Explanation: Ensuring medical professionals are on their way is the top priority.** A) Contact a nearby person – Helpful but secondary to calling for emergency medical help. C) Gather supplies – Important, but only after calling for assistance. D) Check for the umbilical cord – This is done later, once the baby’s head is delivered.

Answer 141

**Correct Answer: D) Contractions every 10 minutes Explanation: Contractions every 10 minutes indicate early labor, not imminent birth.** A) Strong urge to push – Suggests full dilation and the second stage of labor. B) Bulging perineum – Indicates the baby is descending into the birth canal. C) Crowning – The baby’s head being visible is a definitive sign of imminent delivery.

Answer 142

**Correct Answer: B) Oxytocin augmentation Explanation: Oxytocin strengthens contractions, helping progress labor.** A) Amniotomy – More useful in first-stage labor. C) Immediate cesarean – Considered if labor fails to progress despite interventions. D) Delaying – Prolonged second-stage labor can increase risks to both mother and baby.

Answer 143

✅ Question 1: Correct Answer: C) Stimulate the baby by rubbing the back and feet Explanation: Most newborns respond well to tactile stimulation (e.g., rubbing the back and soles of the feet). If the baby does not respond, further resuscitation steps like positive pressure ventilation (PPV) or chest compressions may be needed. Immediate chest compressions are not the first step unless the baby has a heart rate below 60 bpm after effective ventilation. Cutting the umbilical cord before ensuring the baby is stable may compromise blood flow, especially if delayed cord clamping is beneficial. Why the Other Answers Are Incorrect: ❌ A) Begin chest compressions immediately – This is premature. Resuscitation begins with stimulation and ventilation before compressions. ❌ B) Call for emergency medical services – If trained personnel are present, immediate newborn care should be initiated first. ❌ D) Cut the umbilical cord and give oxygen – The cord should not be cut prematurely, and oxygen is only given if needed after initial steps.

Answer 144

Correct Answer: C) Maternal dehydrationExplanation: Labor dystocia is caused by issues with contractions (powers), fetal positioning (passenger), or pelvic anatomy (passage). While dehydration may impact labor progress, it is not a direct cause of dystocia. **Causes of Labor Dystocia** Labor dystocia arises from abnormalities in three key factors: **1. Powers (Uterine contractions & maternal pushing effort)** a) Uterine contractions may be too weak or poorly coordinated (uterine dysfunction). b) Inadequate maternal pushing in second-stage labor. **2. Passenger (Fetal factors)** a) Fetal position (occiput posterior), malpresentation (breech, transverse). b) Fetal macrosomia (large size) or congenital anomalies. **3. Passage (Maternal pelvis & soft tissue)** a) Cephalopelvic disproportion (CPD): Pelvis is too small for the baby. b) Soft tissue obstructions (e.g., fibroids, vaginal septa).

Answer 145

**Correct Answer: D) Both B and CExplanation: Occiput posterior (back of baby's head facing mom’s spine) and transverse lie (baby is sideways) can both lead to labor dystocia and may require intervention** **Causes of Labor Dystocia** 2. Passenger (Fetal factors) 1. Fetal position (occiput posterior), malpresentation (breech, transverse). 2. Fetal macrosomia (large size) or congenital anomalies. 1. Occiput Posterior (OP) Position Normally, the baby is in an occiput anterior (OA) position, meaning the back of their head is facing the front of the mother’s pelvis. In the occiput posterior (OP) position, the back of the baby's head is toward the mother's spine. This can cause: Longer and more painful labor because the baby’s head doesn’t fit as easily through the birth canal. Back labor due to the baby’s skull pressing against the mother’s spine. Increased risk of operative delivery (forceps, vacuum, or C-section) if the baby doesn’t rotate on its own. 2. Breech Presentation (Buttocks or Feet First) The safest way for a baby to be born vaginally is head first (cephalic presentation) because the head is the largest part and helps dilate the cervix properly. In a breech presentation, the baby’s buttocks or feet come first, which increases the risk of: Head entrapment – The baby’s body may deliver, but the head (which is the widest part) can get stuck. Cord prolapse – The umbilical cord may slip through the cervix before the baby, leading to dangerous compression and loss of oxygen. Birth trauma – Breech babies have a higher risk of injury during delivery. 3. Transverse Lie (Sideways Position) The baby is lying horizontally across the uterus instead of head-down or buttocks-down. This makes vaginal delivery impossible because: The shoulders cannot fit through the birth canal. There is a high risk of cord prolapse, which can cut off oxygen to the baby. Nearly all transverse babies require a cesarean section unless they rotate before labor.

Answer 146

Correct Answer: B) Administer oxytocin and perform amniotomyExplanation: If labor is stalled (>4 hours without dilation despite strong contractions or >6 hours with weak contractions), oxytocin is used to augment labor, and amniotomy (breaking the water) may help progress. PROTRACTED Labor First Stage Dystocia (difficult or obstructed labor) * Latent Phase: Slow dilation before 6 cm. * Avoid early hospital admission if maternal & fetal conditions are stable. * Active Phase: Begins at 6 cm dilation. * Arrested labor: * >4 hrs without dilation despite adequate contractions. * >6 hrs without dilation with inadequate contractions. * Management: * Oxytocin augmentation. * Amniotomy (rupturing membranes).

Answer 147

✅ Question 2: Correct Answer: A) Encourage upright positioning during early labor Explanation: Upright positions (e.g., walking, sitting, squatting) use gravity to promote fetal descent, improve uterine contractions, and enhance labor progression. Encouraging movement reduces labor dystocia (abnormally slow or obstructed labor). Why the Other Answers Are Incorrect: ❌ B) Induce labor at 35 weeks – Not recommended unless medically necessary; induction before 39 weeks without a clear reason increases risks of neonatal complications. ❌ C) Keep the mother in bed for the entire labor – This can slow labor progression and increase intervention rates. ❌ D) Delay admission to the hospital until the second stage of labor – While early admission can increase interventions, waiting until the second stage (pushing phase) could be unsafe if complications arise. These answers align with evidence-based obstetric recommendations for promoting optimal labor progress and reducing unnecessary interventions.

Answer 148

Correct Answer: a) Using gentle hand pressure to rotate the fetal head from OP to OA during labor Explanation: ✅ (a) Correct: Manual rotation involves applying gentle pressure with the fingers or hand inside the vagina to guide the fetal head from OP (or another malposition) to OA, which facilitates vaginal delivery. ❌ (b) Incorrect: Fundal pressure is not recommended as it can cause fetal distress and increase the risk of complications like uterine rupture. ❌ (c) Incorrect: Supine positioning may actually contribute to labor dystocia and should be avoided in favor of upright or side-lying positions. ❌ (d) Incorrect: While forceps-assisted rotation may be used when manual methods fail, it is a separate intervention and carries additional risks.

Answer 149

Correct Answer: a) Encouraging upright positioning during early labor Explanation: ✅ (a) Correct: Upright positions (e.g., walking, sitting, kneeling) promote fetal descent, enhance uterine contractions, and shorten labor duration by using gravity effectively. ❌ (b) Incorrect: Keeping the patient in bed can slow labor and increase the risk of interventions. ❌ (c) Incorrect: Inducing labor at 35 weeks without a medical reason increases the risk of complications for both the baby and mother. ❌ (d) Incorrect: While early admission can lead to unnecessary interventions, waiting until the second stage (pushing phase) may be unsafe.

Answer 150

Correct Answer: a) Reduced cesarean delivery rates Explanation: ✅ (a) Correct: Research, including Cochrane reviews, has found that continuous labor support is associated with lower cesarean rates, shorter labor, and improved maternal satisfaction. ❌ (b) Incorrect: Continuous labor support actually reduces epidural use by promoting natural pain management techniques. ❌ (c) Incorrect: While maternal outcomes improve, newborn hospital stays are not necessarily shorter. ❌ (d) Incorrect: Labor support reduces the need for operative vaginal delivery (forceps, vacuum).

Answer 151

Correct Answer: a) Reduced cesarean delivery rates Explanation: ✅ (a) Correct: Research, including Cochrane reviews, has found that continuous labor support is associated with lower cesarean rates, shorter labor, and improved maternal satisfaction. ❌ (b) Incorrect: Continuous labor support actually reduces epidural use by promoting natural pain management techniques. ❌ (c) Incorrect: While maternal outcomes improve, newborn hospital stays are not necessarily shorter. ❌ (d) Incorrect: Labor support reduces the need for operative vaginal delivery (forceps, vacuum).

Answer 152

Correct Answer: a) A patient with one prior low-transverse cesarean and no contraindications Explanation: ✅ (a) Correct: The best candidates for VBAC have had one prior low-transverse (horizontal) cesarean incision and no other complications (e.g., placenta previa, previous uterine rupture). ❌ (b) Incorrect: Multiple prior cesareans and unknown scar type increase the risk of uterine rupture. ❌ (c) Incorrect: Placenta previa is a contraindication for vaginal delivery. ❌ (d) Incorrect: A history of uterine rupture makes VBAC too high-risk for most patients.

Answer 153

Correct Answer: a) Induction with oxytocin to reduce maternal infections Explanation: ✅ (a) Correct: Studies (e.g., Hannah et al., Mozurkewich et al.) show that inducing labor with oxytocin after PROM reduces the risk of maternal infections (e.g., chorioamnionitis) without increasing cesarean rates. ❌ (b) Incorrect: Expectant home management was found to lead to worse maternal outcomes compared to in-hospital monitoring. ❌ (c) Incorrect: Routine antibiotic use is not necessary unless the membranes have been ruptured for >18 hours (due to risk of Group B strep infection). ❌ (d) Incorrect: Cesarean delivery is not indicated unless complications arise.

Answer 154

Correct Answer: ✅ a) Maternal age, BMI, history of prior vaginal delivery, and labor characteristics Explanation: The VBAC calculator uses various factors to estimate the probability of a successful vaginal birth after cesarean. These include maternal age, BMI, previous vaginal deliveries, and labor characteristics (e.g., cervical dilation at admission). Why the other choices are wrong: ❌ b) Only the number of prior C-sections – While the number of prior cesareans matters, it is not the only factor. ❌ c) Hospital policies and provider preference – These may influence a patient’s access to VBAC, but they are not part of the actual VBAC calculator. ❌ d) Time since last pregnancy – While interpregnancy interval may impact VBAC success, it is not a major factor in the standard calculator.

Answer 155

Correct Answer: ✅ a) Lower maternal morbidity in most cases Explanation: Vaginal birth is generally associated with lower maternal morbidity (less risk of infection, blood loss, and surgical complications) compared to C-section. Why the other choices are wrong: ❌ b) Reduced neonatal gut microbiota diversity – Wrong because vaginal birth promotes gut microbiome colonization, which benefits the newborn’s immune system. ❌ c) Higher risk of postpartum hemorrhage – Wrong because C-sections have a higher risk of hemorrhage than vaginal births. ❌ d) Longer hospital stay – Wrong because vaginal births usually lead to shorter hospital stays compared to C-sections.

Answer 156

Correct Answer: ✅ a) Cephalopelvic disproportion (CPD) Explanation: CPD occurs when the fetal head is too large or the maternal pelvis is too small for a safe vaginal delivery, necessitating a C-section. Why the other choices are wrong: ❌ b) Prolonged latent phase of labor (under 6 hours) – Not a true indication; latent labor can last 20+ hours and still progress normally. ❌ c) Patient preference alone, even in a low-risk case – While patient autonomy is important, elective C-sections in low-risk cases are controversial and should be balanced with medical guidance. ❌ d) Use of oxytocin to augment labor – Oxytocin is used to assist labor progression and is not an indication for C-section.

Answer 157

Correct Answer: ✅ a) To prepare an unfavorable cervix for labor induction Explanation: Cervical ripening agents (e.g., misoprostol, prostaglandins) help soften and dilate the cervix before induction, making labor more successful. Why the other choices are wrong: ❌ b) To shorten the active phase of labor in spontaneous labor – Wrong because cervical ripening is used before induction, not in spontaneous labor. ❌ c) Only in post-term pregnancies (after 42 weeks) – Wrong because ripening agents are used in various situations, not just post-term pregnancies. ❌ d) For all patients undergoing labor induction, regardless of cervical status – Wrong because ripening agents are not needed if the cervix is already favorable.

Answer 158

**Answer: B) Immediate induction with oxytocin → Correct. Studies (Hannah et al., 1996; Peleg et al., 1999; Mozurkewich et al., 2009) show that induction reduces maternal infections without increasing cesarean rates.** Explanation: A) Expectant home management → Incorrect. Studies (Hannah, 2000) show worse outcomes with home management compared to in-hospital monitoring. C) Routine administration of antibiotics regardless of rupture duration → Incorrect. Antibiotics are only recommended if membranes have been ruptured for >18 hours to prevent Group B Streptococcus infection. D) Emergency cesarean section → Incorrect. There is no indication for an immediate cesarean section unless fetal distress or other complications arise.

Answer 159

**B) Postpartum hemorrhage → Correct. Rapid delivery can cause uterine atony, leading to postpartum hemorrhage.** Explanation: A) Amniotic fluid embolism → Incorrect. This is a rare but severe complication, not the most common. C) Birth trauma → Incorrect. This is a more significant risk for the neonate rather than the mother. D) Preterm labor → Incorrect. Precipitous labor refers to rapid labor (<3 hours), but it is not necessarily preterm. Ineffective Uterine Contractions After Rapid Delivery Normally, the uterus contracts gradually during labor, allowing it to clamp down on blood vessels after delivery. In precipitous labor, the uterus contracts intensely and suddenly, but after delivery, it may become exhausted and fail to contract properly (uterine atony). This leads to excessive bleeding. Inadequate Time for Gradual Cervical Effacement and Dilation In normal labor, the cervix gradually thins (effaces) and opens (dilates), reducing the risk of traumatic injury. In precipitous labor, the cervix is forced open rapidly, increasing the risk of cervical lacerations, which can contribute to PPH. Increased Risk of Uterine Rupture and Tissue Trauma Rapid contractions can lead to excessive stress on the uterine wall, increasing the risk of uterine rupture—a serious cause of hemorrhage. The vagina and perineum may not have enough time to stretch adequately, leading to perineal tears, which also increase bleeding. Placental Separation Issues A normally timed labor allows for gradual placental separation. In precipitous labor, the placenta may detach too quickly, leading to incomplete separation or retained placental fragments, both of which can cause continued bleeding. Blood Vessel Damage Due to High Intrauterine Pressure Excessively strong uterine contractions can cause blood vessels in the uterus to rupture, increasing bleeding risk.

Answer 160

**Answer: B) Intracranial injury → Correct. Rapid passage through the birth canal increases the risk of head trauma.** Explanation: A) Hyperbilirubinemia → Incorrect. This is more commonly associated with conditions like ABO incompatibility or prematurity. C) Neonatal sepsis → Incorrect. Sepsis risk is higher in prolonged rupture of membranes (>18 hours), not precipitous labor. D) Meconium aspiration syndrome → Incorrect. This is more common in post-term deliveries or fetal distress rather than rapid labor. ================================= Neonatal Risks * Decreased oxygenation due to continuous uterine contractions * Birth trauma risks: * Intracranial injury (due to resistance from birth canal) * Brachial plexus injuries (Erb or Duchenne palsy in 1/3 of cases) * Unattended birth injuries (falling to floor) * Delayed resuscitation risk due to rapid delivery

Answer 161

c**C) Cervical length measurement → Correct. A shortened cervix (below 5th-10th percentile) indicates increased risk for preterm labor.** Explanation: A) Non-stress test → Incorrect. This assesses fetal well-being but is not a primary screening tool for preterm labor. B) Biophysical profile → Incorrect. This evaluates fetal health in high-risk pregnancies but does not predict preterm labor. D) Amniotic fluid index → Incorrect. This measures amniotic fluid volume but does not predict preterm labor. Screening for Preterm Labor * Cervical length measurement * Fetal fibronectin test * Many patients experience uterine contractions during pregnancy. * Missing true preterm labor has serious consequences. * Over-managing false cases leads to high financial costs.

Answer 162

✅ Correct Answer: B) Placenta previa Explanation: Placenta previa (placenta covering the cervix) is an absolute contraindication to induction due to the risk of massive hemorrhage. ❌ A) Gestational diabetes requiring insulin → This is an indication for induction if the pregnancy is at term and there are concerns about fetal macrosomia or placental function. ❌ C) Oligohydramnios → Oligohydramnios (low amniotic fluid) can be an indication for induction if fetal distress or growth restriction is present. ❌ D) Suspected intrauterine growth restriction (IUGR) → IUGR is an indication for induction in cases of fetal compromise.

Answer 163

✅ Correct Answer: B) Early and variable decelerations Explanation: Amniotomy can cause cord compression, leading to early and variable decelerations on fetal heart monitoring. ❌ A) Increased duration of labor → Amniotomy is used to shorten labor, not prolong it. ❌ C) Cervical lacerations → Cervical lacerations are more related to forceful delivery or induction, not amniotomy alone. ❌ D) Increased risk of breech presentation → Amniotomy is only performed when the fetal position is already confirmed.

Answer 164

Answer: B) Cocaine use Explanation: (A) Primiparity – Incorrect. First-time pregnancies (primiparity) are generally associated with longer labor rather than rapid labor. (B) Cocaine use – Correct. Cocaine use is linked to placental abruption, which can cause frequent contractions and lead to precipitous labor. (C) Prolonged labor – Incorrect. Prolonged labor is the opposite of precipitous labor, which is defined by extremely rapid delivery. (D) Uterine atony – Incorrect. Uterine atony is a risk factor for postpartum hemorrhage, not precipitous labor. **Maternal Complications of precipitous labor** * Minimal if: Cervix is effaced, vagina is stretched, perineum is relaxed * Severe complications may include: * Uterine rupture * Cervical, vaginal, vulvar, or perineal lacerations * Amniotic fluid embolism * Postpartum hemorrhage (due to uterine atony) * Risk Factors: * Multiparity (frequent contractions <2 min apart) * Cocaine use (linked to placental abruption)

Answer 165

2. How Terbutaline Helps Terbutaline is a beta-2 adrenergic agonist, meaning it relaxes smooth muscle, including the uterus. It is sometimes used to counteract excessive contractions (tachysystole) and give the fetus time to recover between contractions. If the fetal heart rate is nonreassuring due to excessive contractions, 250 mcg IM terbutaline may help by reducing contraction frequency and improving placental perfusion. 3. Why It’s Not a Guaranteed Solution If labor is already too far along, it won’t significantly delay delivery. If fetal distress is caused by another issue (e.g., placental abruption, cord prolapse), terbutaline won’t fix the underlying cause. Side effects: Terbutaline can cause maternal tachycardia, hypotension, and hyperglycemia, which may also affect the fetus. 4. When to Use It It is most useful when tachysystole is causing fetal distress and labor is not yet imminent. If delivery is happening within minutes, other interventions like immediate delivery or intrauterine resuscitation (e.g., oxygen, repositioning, IV fluids) may be more appropriate.

Answer 166

**What to Do if Late Decelerations Are Present?** Interventions focus on improving oxygen delivery to the fetus: Reposition the mother (left lateral position) to improve blood flow Give oxygen via mask (10 L/min) Increase IV fluids to improve circulation Stop oxytocin (if being used) to reduce contraction frequency Consider tocolytics like terbutaline if contractions are excessive Prepare for delivery if the pattern persists despite interventions

Answer 167

**Correct Answer: A) Uterine inertia Explanation: Uterine inertia refers to weak or insufficient contractions, leading to prolonged labor and increased C-section risk.** Why the others are wrong: (B) Tetanic contractions are excessive, sustained contractions (hyperstimulation), not weak ones. (C) Uterine rupture is a severe complication but occurs with excessive force, not inadequate contractions. (D) Umbilical cord prolapse occurs when the cord slips past the baby, usually after amniotomy, not due to weak contractions. **Maternal Complications of Induction** * Failure of Induction → Increased risk of cesarean delivery. * Uterine Inertia → Prolonged labor due to inadequate contractions. * Hyperstimulation of the Uterus → Risks include: * Tetanic contractions (sustained uterine contractions). * Premature placental separation (abruption). * Uterine rupture. * Cervical lacerations. * Intrauterine Infection → Especially with prolonged rupture of membranes. * Postpartum Hemorrhage (PPH) → Due to uterine atony (failure to contract after delivery).

Answer 168

Correct Answer: B) Fetal hypoxia Explanation: Excessive oxytocin can cause tachysystole (too many contractions), reducing fetal oxygen supply and leading to fetal hypoxia and distress. Why the others are wrong: (A) Shoulder dystocia (stuck shoulders during birth) is more associated with fetal macrosomia, not oxytocin. (C) Chorioamnionitis (infection of the amniotic sac) is linked to prolonged rupture of membranes, not oxytocin use. (D) Polyhydramnios (excess amniotic fluid) is unrelated to labor induction.

Baby formation, Pregnancy, and Maternal changes Flashcards

(192 cards)