Chapter 14 Flashcards
In assessing the knowledge of a pregestational woman with type 1 diabetes about changing insulin needs during pregnancy, the nurse recognizes that further teaching is warranted when the patient states which of the following?
a. “I will need to increase my insulin dosage during the first 3 months of pregnancy.”
b. “Insulin dosage will likely need to be increased during the second and third trimesters.”
c. “Episodes of hypoglycemia are more likely to occur during the first 3 months.”
d. “Insulin needs should return to normal within 7 to 10 days after birth if I am bottle-feeding.”
ANS: A
Insulin needs are reduced in the first trimester because of increased insulin production by the pancreas and increased peripheral sensitivity to insulin. “Insulin dosage will likely need to be increased during the second and third trimesters,” “Episodes of hypoglycemia are more likely to occur during the first 3 months,” and “Insulin needs should return to normal within 7 to 10 days after birth if I am bottle-feeding” are accurate statements and signify that the woman has understood the teachings regarding control of her diabetes during pregnancy.
Preconception counselling is critical to the outcome of diabetic pregnancies because poor glycemic control before and during early pregnancy is associated with which of the following?
a. Frequent episodes of maternal hypoglycemia
b. Congenital anomalies in the fetus
c. Polyhydramnios
d. Hyperemesis gravidarum
ANS: B
Preconception counselling is particularly important because strict metabolic control before conception and in the early weeks of gestation is instrumental in decreasing the risks of congenital anomalies. Frequent episodes of maternal hypoglycemia may occur during the first trimester (not before conception) as a result of hormone changes and the effects on insulin production and usage. Hydramnios occurs about 10 times more often in diabetic pregnancies than in nondiabetic pregnancies. Typically it is seen in the third trimester of pregnancy. Hyperemesis gravidarum may exacerbate hypoglycemic events as the decreased food intake by the mother and glucose transfer to the fetus contribute to hypoglycemia.
In planning for the care of a 30-year-old woman with pregestational diabetes, what does the nurse recognize as the most important factor affecting pregnancy outcome?
a. Mother’s age
b. Number of years since diabetes was diagnosed
c. Amount of insulin required prenatally
d. Degree of glycemic control during pregnancy
ANS: D
Women with excellent glucose control and no blood vessel disease should have good pregnancy outcomes. The mother`s age is not related to gestational diabetes. Number of years since diabetes was diagnosed is not the most important factor affecting pregnancy outcome. The amount of insulin required prenatally is not the most important factor affecting pregnancy outcome.
What normal fasting glucose level should the nurse recommend for a woman with pregestational diabetes?
a. 2.5–3.5 mmol/L
b. 3.8–5.2 mmol/L
c. 5.5–7.7 mmol/L
d. 5.0–6.6 mmol/L
ANS: B
Target glucose levels during a fasting period are 3.8–5.2 mmol/L. A glucose level of 2.5–3.5 mmol/L is low. A glucose level of 5.5–7.7 mmol/L is consistent with expected levels with 1-hour postprandial plasma glucose (PG). A glucose level of 5.0–6.6 mmol/L is considered normal for a 2-hour postprandial PG.
Screening at 24 weeks of gestation reveals that a pregnant woman has gestational diabetes mellitus (GDM). In planning her care the nurse and the woman mutually agree that an expected outcome is to prevent injury to the fetus as a result of GDM. The nurse identifies that the fetus is at greatest risk for which of the following?
a. Macrosomia
b. Congenital anomalies of the central nervous system
c. Preterm birth
d. Low birth weight
ANS: A
Fetal macrosomia is a risk to the fetus of a mother with GDM. Poor glycemic control during the preconception time frame and into the early weeks of the pregnancy is associated with congenital anomalies. Preterm labour or birth is more likely to occur with severe diabetes and is the greatest risk in women with pregestational diabetes. Increased weight, or macrosomia, is the greatest risk factor for this woman.
A 26-year-old primigravida has come to the clinic for her regular prenatal visit at 12 weeks. She appears thin and somewhat nervous. She reports that she eats a well-balanced diet, although her weight is 2 kilograms less than it was at her last visit. The results of laboratory studies confirm that she has a hyperthyroid condition. Based on the available data, the nurse formulates a plan of care. What nursing diagnosis is most appropriate for the woman at this time?
a. Deficient fluid volume
b. Imbalanced nutrition: less than body requirements
c. Imbalanced nutrition: more than body requirements
d. Disturbed sleep pattern
ANS: B
This patient’s clinical cues include weight loss, which would support the nursing diagnosis of Imbalanced nutrition: less than body requirements. No clinical signs or symptoms support the nursing diagnosis of Deficient fluid volume. This patient reports weight loss, not weight gain. Imbalanced nutrition: more than body requirements is not an appropriate nursing diagnosis. Although the patient reports nervousness, based on the patient’s other clinical symptoms the most appropriate nursing diagnosis would be imbalanced nutrition: less than body requirements.
Which of the following should the nurse know about drug testing during pregnancy in Canada?
a. It is required at the first prenatal visit.
b. Only those drugs disclosed by the woman are tested for.
c. There is no legal requirement to test the mother or the
newborn child.
d. Testing is required before labour and delivery.
ANS: C
There is no legal requirement in Canada for a health care provider to test either the mother or the newborn child for the presence of drugs. Testing is not required on the initial prenatal visit. If testing were to occur, all substances would be tested for, not just those disclosed by the mother. Testing is not required before labour and delivery.
Which of the following should the nurse know in terms of the incidence and classification of diabetes?
a. Type 1 diabetes is most common.
b. Type 2 diabetes often goes undiagnosed.
c. Gestational diabetes mellitus (GDM) means that the woman will be receiving insulin treatment until 6 weeks after birth.
d. Type 1 diabetes may become type 2 during pregnancy.
ANS: B
Type 2 diabetes often goes undiagnosed for many years because hyperglycemia develops gradually and often is not severe. Type 2, sometimes called adult-onset diabetes, is most common. GDM refers to any degree of glucose intolerance first recognized during pregnancy. Insulin may or may not be needed. People do not go back and forth between types 1 and 2 diabetes.
Metabolic changes throughout pregnancy that affect glucose and insulin in the mother and the fetus are complicated but important to understand. Which of the following is important for the nurse to know?
a. Insulin crosses the placenta to the fetus only in the first trimester, after which the fetus secretes its own.
b. Women with insulin-dependent diabetes are prone to hyperglycemia during the first trimester because they are consuming more sugar.
c. During the second and third trimesters pregnancy exerts a diabetogenic effect that ensures an abundant supply of glucose for the fetus.
d. Maternal insulin requirements steadily decline during pregnancy.
ANS: C
Pregnant women develop increased insulin resistance during the second and third trimesters. Pregnancy exerts a diabetogenic effect on the maternal metabolic status during the second and third trimesters. Insulin never crosses the placenta; the fetus starts making its own around the tenth week. As a result of normal metabolic changes during pregnancy, insulin-dependent women are prone to hypoglycemia. Maternal insulin requirements may double or quadruple by the end of pregnancy
With regard to maternal diabetes and other risk situations affecting the mother and fetus, what should the nurse should be aware of?
a. Diabetic ketoacidosis (DKA) can lead to fetal death at any time during pregnancy.
b. Hydramnios occurs approximately twice as often in diabetic pregnancies.
c. Infections occur about as often and are considered about as serious in diabetic and nondiabetic pregnancies.
d. Even mild-to-moderate hypoglycemic episodes can have significant effects on fetal well-being.
ANS: A
Prompt treatment of DKA is necessary to save the fetus and the mother. Hydramnios occurs 10 times more often in diabetic pregnancies. Infections are more common and more serious in pregnant women with diabetes. Mild-to-moderate hypoglycemic episodes do not appear to have significant effects on fetal well-being.
The nurse should be aware of which of the following in relation to diabetes in pregnancy?
a. With good control of maternal glucose levels, sudden and unexplained stillbirth is no longer a major concern.
b. The most important cause of perinatal loss in diabetic pregnancy is congenital malformations.
c. Infants of mothers with diabetes have the same risks for respiratory distress syndrome because of the careful monitoring.
d. At birth the neonate of a diabetic mother is no longer at any risk.
ANS: B
Congenital malformations account for 6% to 10% of infants born to mothers with diabetes. Even with good control, sudden and unexplained stillbirth remains a major concern. Infants of diabetic mothers are at increased risk for respiratory distress syndrome. The transition to extrauterine life often is marked by hypoglycemia and other metabolic abnormalities.
The nurse providing care for a woman with gestational diabetes understands which of the following about a laboratory test for glycosylated hemoglobin Alc?
a. The test is now done for all pregnant women, not just those with or likely to have diabetes.
b. The test is a snapshot of glucose control at the moment.
c. The test is completed to evaluate glycemic control over time.
d. The test is done on the patient’s urine, not her blood.
ANS: C
A laboratory test for glycosylated hemoglobin Alc would provide evidence of glycemic control over time. This is an extra test for diabetic women, not one done for all pregnant women. This test defines glycemic control over the previous 4 to 6 weeks. Glycosylated hemoglobin level tests are done on blood, not urine.
A woman with gestational diabetes has had little or no experience reading and interpreting glucose levels. She shows the nurse her readings for the past few days. Which reading should the nurse tell her is not within the normal limits for blood glucose levels?
a. 3.2 mmol/L
b. 3.8 mmol/L
c. 4.2 mmol/L
d. 4.8 mmol/L
ANS: A
Normal glucose levels during pregnancy are 3.8–5.2 mmol/L; therefore, the only reading that is not within normal limits is 3.2 mmol/L.
Which factor increases the risk of mother-to-child perinatal HIV transmission?
a. Treatment with antiretroviral
b. Presence of chorioamnionitis
c. Bottle feeding after delivery
d. Maternal plasma viral level less than 1000 copies per mL
ANS: B
The presence of chorioamnionitis is a factor that increases the risk of transmission. Treatment will antiretroviral medication decreases the risk. Breastfeeding, not bottle feeding, increases the risk. A maternal plasma viral level greater than 1000 copies per mL not less than this, increases the risk.
Which of the following statements is accurate in providing perinatal care for women who use substances?
a. A decision to stop using substances must be made by the family.
b. Harm reduction practices are not effective with pregnant women.
c. Effects of perinatal substance use in pregnancy and postpartum must be reviewed.
d. Use of community resources for women to eliminate a social bias for perinatal care must be avoided.
ANS: C
Reviewing effects of perinatal substance use in pregnancy and postpartum is one recommendation for perinatal care for women who use substances. The decision to stop using substances must be the woman’s, not her family’s. Harm-reduction practices are effective with all individuals that use substances. Community resources should not be avoided, rather the nurse should be familiar with what is available.