Chapter 32 Flashcards
- In planning for home care of a woman with preterm labor, which concern should the nurse need to address?
a. Nursing assessments are different from those performed in the hospital setting.
b. Restricted activity and medications are necessary to prevent a recurrence of preterm labor.
c. Prolonged bed rest may cause negative physiologic effects.
d. Home health care providers are necessary.
ANS: C
Prolonged bed rest may cause adverse effects such as weight loss, loss of appetite, muscle wasting, weakness, bone demineralization, decreased cardiac output, risk for thrombophlebitis, alteration in bowel functions, sleep disturbance, and prolonged postpartum recovery. Nursing assessments differ somewhat from those performed in the acute care setting, but this concern does not need to be addressed. Restricted activity and medications may prevent preterm labor but not in all women. In addition, the plan of care is individualized to meet the needs of each client. Many women receive home health nurse visits, but care is individualized for each woman.
- Which nursing intervention is paramount when providing care to a client with preterm labor who has received terbutaline?
a. Assess deep tendon reflexes (DTRs).
b. Assess for dyspnea and crackles.
c. Assess for bradycardia.
d. Assess for hypoglycemia.
ANS: B
Terbutaline is a beta2-adrenergic agonist that affects the mother’s cardiopulmonary and metabolic systems. Signs of cardiopulmonary decompensation include adventitious breath sounds and dyspnea. An assessment for dyspnea and crackles is important for the nurse to perform if the woman is taking magnesium sulfate. Assessing DTRs does not address the possible respiratory side effects of using terbutaline. Since terbutaline is a beta2-adrenergic agonist, it can lead to hyperglycemia, not hypoglycemia. Beta2-adrenergic agonist drugs cause tachycardia, not bradycardia.
- In evaluating the effectiveness of magnesium sulfate for the treatment of preterm labor, which finding alerts the nurse to possible side effects?
a. Urine output of 160 ml in 4 hours
b. DTRs 2+ and no clonus
c. Respiratory rate (RR) of 16 breaths per minute
d. Serum magnesium level of 10 mg/dl
ANS: D
The therapeutic range for magnesium sulfate management is 4 to 7.5 mg/dl. A serum magnesium level of 10 mg/dl could lead to signs and symptoms of magnesium toxicity, including oliguria and respiratory distress. Urine output of 160 ml in 4 hours, DTRs of 2+, and a RR of 16 breaths per minute are all normal findings.
- A woman in preterm labor at 30 weeks of gestation receives two 12-mg intramuscular (IM) doses of betamethasone. What is the purpose of this pharmacologic intervention?
a. To stimulate fetal surfactant production
b. To reduce maternal and fetal tachycardia associated with ritodrine administration
c. To suppress uterine contractions
d. To maintain adequate maternal respiratory effort and ventilation during magnesium sulfate therapy
ANS: A
Antenatal glucocorticoids administered as IM injections to the mother accelerate fetal lung maturity. Propranolol (Inderal) is given to reduce the effects of ritodrine administration. Betamethasone has no effect on uterine contractions. Calcium gluconate is given to reverse the respiratory depressive effects of magnesium sulfate therapy.
- A primigravida at 40 weeks of gestation is having uterine contractions every to 2 minutes and states that they are very painful. Her cervix is dilated 2 cm and has not changed in 3 hours. The woman is crying and wants an epidural. What is the likely status of this woman’s labor?
a. She is exhibiting hypotonic uterine dysfunction.
b. She is experiencing a normal latent stage.
c. She is exhibiting hypertonic uterine dysfunction.
d. She is experiencing precipitous labor.
ANS: C
The contraction pattern observed in this woman signifies hypertonic uterine activity. Typically, uterine activity in this phase occurs at 4- to 5-minute intervals lasting 30 to 45 seconds. Women who experience hypertonic uterine dysfunction, or primary dysfunctional labor, are often anxious first-time mothers who are having painful and frequent contractions that are ineffective at causing cervical dilation or effacement to progress. With hypotonic uterine dysfunction, the woman initially makes normal progress into the active stage of labor; then the contractions become weak and inefficient or stop altogether. Precipitous labor is one that lasts less than 3 hours from the onset of contractions until time of birth.
- A woman is having her first child. She has been in labor for 15 hours. A vaginal examination performed 2 hours earlier revealed the cervix to be dilated to 5 cm and 100% effaced, and the presenting part of the fetus was at station 0; however, another vaginal examination performed 5 minutes ago indicated no changes. What abnormal labor pattern is associated with this description?
a. Prolonged latent phase
b. Protracted active phase
c. Secondary arrest
d. Protracted descent
ANS: C
With a secondary arrest of the active phase, the progress of labor has stopped. This client has not had any anticipated cervical change, indicating an arrest of labor. In the nulliparous woman, a prolonged latent phase typically lasts longer than 20 hours. A protracted active phase, the first or second stage of labor, is prolonged (slow dilation). With a protracted descent, the fetus fails to descend at an anticipated rate during the deceleration phase and second stage of labor.
- Prostaglandin gel has been ordered for a pregnant woman at 43 weeks of gestation. What is the primary purpose of prostaglandin administration?
a. To enhance uteroplacental perfusion in an aging placenta
b. To increase amniotic fluid volume
c. To ripen the cervix in preparation for labor induction
d. To stimulate the amniotic membranes to rupture
ANS: C
Preparations of prostaglandin E1 and E2 are effective when used before labor induction to ripen (i.e., soften and thin) the cervix. Uteroplacental perfusion is not altered by the use of prostaglandins. The insertion of prostaglandin gel has no effect on the level of amniotic fluid. In some cases, women will spontaneously begin laboring after the administration of prostaglandins, thereby eliminating the need for oxytocin. It is not common for a woman’s membranes to rupture as a result of prostaglandin use.
- A pregnant woman at 29 weeks of gestation has been diagnosed with preterm labor. Her labor is being controlled with tocolytic medications. She asks when she might be able to go home. Which response by the nurse is most accurate?
a. “After the baby is born.”
b. “When we can stabilize your preterm labor and arrange home health visits.”
c. “Whenever your physician says that it is okay.”
d. “It depends on what kind of insurance coverage you have.”
ANS: B
This client’s preterm labor is being controlled with tocolytics. Once she is stable, home care may be a viable option for this type of client. Care of a client with preterm labor is multidisciplinary and multifactorial; the goal is to prevent delivery. In many cases, this goal may be achieved at home. Managed care may dictate an earlier hospital discharge or a shift from hospital to home care. Insurance coverage may be one factor in client care, but ultimately, client safety remains the most important factor.
- The obstetric provider has informed the nurse that she will be performing an amniotomy on the client to induce labor. What is the nurse’s highest priority intervention after the amniotomy is performed?
a. Applying clean linens under the woman
b. Taking the client’s vital signs
c. Performing a vaginal examination
d. Assessing the fetal heart rate (FHR)
ANS: D
The FHR is assessed before and immediately after the amniotomy to detect any changes that might indicate cord compression or prolapse. Providing comfort measures, such as clean linens, for the client is important but not the priority immediately after an amniotomy. The woman’s temperature should be checked every 2 hours after the rupture of membranes but not the priority immediately after an amniotomy. The woman would have had a vaginal examination during the procedure. Unless cord prolapse is suspected, another vaginal examination is not warranted. Additionally, FHR assessment provides clinical cues to a prolapsed cord.
- The nurse who elects to work in the specialty of obstetric care must have the ability to distinguish between preterm birth, preterm labor, and low birth weight. Which statement regarding this terminology is correct?
a. Terms preterm birth and low birth weight can be used interchangeably.
b. Preterm labor is defined as cervical changes and uterine contractions occurring between 20 and 37 weeks of gestation.
c. Low birth weight is a newborn who weighs below 3.7 pounds.
d. Preterm birth rate in the United States continues to increase.
ANS: B
Before 20 weeks of gestation, the fetus is not viable (miscarriage); after 37 weeks, the fetus can be considered term. Although these terms are used interchangeably, they have different meanings: preterm birth describes the length of gestation (before 37 weeks), regardless of the newborn’s weight; low birth weight describes only the infant’s weight at the time of birth (2500 g or less), whenever it occurs. Low birth weight is anything below 2500 g or approximately 5 1/2 pounds. In 2011, the preterm birth rate in the United States was 11.7 %; it has dropped every year since 2008.
- The nurse is performing an assessment on a client who thinks she may be experiencing preterm labor. Which information is the most important for the nurse to understand and share with the client?
a. Because all women must be considered at risk for preterm labor and prediction is so variable, teaching pregnant women the symptoms of preterm labor probably causes more harm through false alarms.
b. Braxton Hicks contractions often signal the onset of preterm labor.
c. Because preterm labor is likely to be the start of an extended labor, a woman with symptoms can wait several hours before contacting the primary caregiver.
d. Diagnosis of preterm labor is based on gestational age, uterine activity, and progressive cervical change.
ANS: D
Gestational age of 20 to 37 weeks, uterine contractions, and a cervix that is 80% effaced or dilated 2 cm indicates preterm labor. It is essential that nurses teach women how to detect the early symptoms of preterm labor. Braxton Hicks contractions resemble preterm labor contractions, but they are not true labor. Waiting too long to see a health care provider could result in essential medications failing to be administered. Preterm labor is not necessarily long-term labor.
- Which statement related to cephalopelvic disproportion (CPD) is the least accurate?
a. CPD can be related to either fetal size or fetal position.
b. The fetus cannot be born vaginally.
c. CPD can be accurately predicted.
d. Causes of CPD may have maternal or fetal origins.
ANS: C
Unfortunately, accurately predicting CPD is not possible. Although CPD is often related to excessive fetal size (macrosomia), malposition of the fetal presenting part is the problem in many cases, not true CPD. When CPD is present, the fetus cannot fit through the maternal pelvis to be born vaginally. CPD may be related to either fetal origins such as macrosomia or malposition or maternal origins such as a too small or malformed pelvis.
- Which statement related to the induction of labor is most accurate?
a. Can be achieved by external and internal version techniques
b. Is also known as a trial of labor (TOL)
c. Is almost always performed for medical reasons
d. Is rated for viability by a Bishop score
ANS: D
Induction of labor is likely to be more successful with a Bishop score of 9 or higher for first-time mothers or 5 or higher for veterans. Version is the turning of the fetus to a better position by a physician for an easier or safer birth. A TOL is the observance of a woman and her fetus for several hours of active labor to assess the safety of vaginal birth. Two thirds of cases of induced labor are elective and not done for medical reasons.
- A number of methods can be used for inducing labor. Which cervical ripening method falls under the category of mechanical or physical?
a. Prostaglandins are used to soften and thin the cervix.
b. Labor can sometimes be induced with balloon catheters or laminaria tents.
c. Oxytocin is less expensive and more effective than prostaglandins but creates greater health risks.
d. Amniotomy can be used to make the cervix more favorable for labor.
ANS: B
Balloon catheters or laminaria tents are mechanical means of ripening the cervix. Ripening the cervix, making it softer and thinner, increases the success rate of induced labor. Prostaglandin E1 is less expensive and more effective than oxytocin but carries a greater risk. Amniotomy is the artificial rupture of membranes, which is used to induce labor only when the cervix is already ripe.
- Which description most accurately describes the augmentation of labor?
a. Is part of the active management of labor that is instituted when the labor process is unsatisfactory
b. Relies on more invasive methods when oxytocin and amniotomy have failed
c. Is a modern management term to cover up the negative connotations of forceps-assisted birth
d. Uses vacuum cups
ANS: A
Augmentation is part of the active management of labor that stimulates uterine contractions after labor has started but is not progressing satisfactorily. Augmentation uses amniotomy and oxytocin infusion, as well as some more gentle, noninvasive methods. Forceps-assisted births are less common than in the past and not considered a method of augmentation. A vacuum-assisted delivery occurs during childbirth if the mother is too exhausted to push. Vacuum extraction is not considered an augmentation methodology.
- The exact cause of preterm labor is unknown but believed to be multifactorial. Infection is thought to be a major factor in many preterm labors. Which type of infection has not been linked to preterm birth?
a. Viral
b. Periodontal
c. Cervical
d. Urinary tract
ANS: A
Infections that increase the risk of preterm labor and birth are bacterial and include cervical, urinary tract, periodontal, and other bacterial infections. Therefore, early, continual, and comprehensive participation by the client in her prenatal care is important. Recent evidence has shown a link between periodontal infections and preterm labor. Researchers recommend regular dental care before and during pregnancy, oral assessment as a routine part of prenatal care, and scrupulous oral hygiene to prevent periodontal infections.