Medium NCLEX OB Practice Questions

Concept Explanation

Medium NCLEX OB Practice Questions focus on the application of clinical knowledge regarding the care of the childbearing family, spanning from conception through the postpartum period and neonatal care. These questions typically require a nurse to prioritize interventions, interpret diagnostic findings like fetal heart rate patterns, and manage common complications such as preeclampsia or gestational diabetes. Mastery of this content involves understanding the physiological changes of pregnancy and the critical safety protocols required during labor and delivery. For those looking to simulate the pressure of the boards, using an AI Exam Simulator can help bridge the gap between theory and clinical application.

Obstetric nursing requires a deep understanding of maternal-fetal hemodynamics. For instance, according to the American College of Obstetricians and Gynecologists, managing blood pressure in pregnancy is vital to prevent maternal stroke and placental abruption. Nurses must be proficient in the GTPAL system (Gravidity, Term, Preterm, Abortions, Living children) and the interpretation of Leopold’s maneuvers to determine fetal position. Furthermore, understanding the nuances of fetal monitoring is essential for identifying early signs of fetal distress, such as late decelerations or sinusoidal patterns.

Solved Examples

1. Calculating Estimated Date of Delivery (EDD)

   A client informs the nurse that her last menstrual period (LMP) began on June 10. Using Naegele’s Rule, what is the EDD?

   1. Start with the first day of the last menstrual period: June 10.
   2. Subtract 3 months from June: March.
   3. Add 7 days to the day (10): 17.
   4. Add 1 year if necessary. The EDD is March 17 of the following year.
2. Interpreting Fetal Heart Rate Patterns

   A nurse observes a fetal heart rate (FHR) pattern showing a gradual decrease and return to baseline that mirrors the uterine contraction. What is the appropriate nursing action?

   1. Identify the pattern as an "early deceleration," which is typically caused by fetal head compression.
   2. Recognize that this is a benign finding and does not indicate fetal distress.
   3. Continue to monitor the labor progress and document the findings. No emergency intervention is required.
3. Managing Postpartum Hemorrhage

   A nurse notes that a client who delivered 2 hours ago has a boggy uterus displaced to the right of the midline. What steps should the nurse take?

   1. Recognize that a displaced uterus often indicates a full bladder, which prevents effective uterine contraction.
   2. Assist the client to the bathroom to void or perform straight catheterization if necessary.
   3. Reassess the fundus after the bladder is empty; it should return to the midline and feel firm.

Practice Questions

1. A client at 32 weeks gestation presents with painless, bright red vaginal bleeding. Which diagnostic procedure should the nurse anticipate first?
2. A nurse is caring for a client receiving an IV infusion of magnesium sulfate for preeclampsia. The client’s respiratory rate is 10 breaths/min and the deep tendon reflexes are absent. Which medication should the nurse prepare to administer?
3. During a routine prenatal visit at 24 weeks, a client’s glucose challenge test result is $155 \text{ mg/dL}$. What is the next step in the client's care?

4. A client in active labor requests an epidural. Which vital sign is most critical for the nurse to monitor immediately following the initiation of epidural anesthesia?
5. A nurse is performing an assessment on a newborn 1 hour after birth. The nurse notes bluish discoloration of the hands and feet, while the trunk is pink. How should the nurse document this finding?
6. A client who is Rh-negative gives birth to an Rh-positive infant. When should the nurse ensure the Rho(D) immune globulin is administered?
7. A nurse is assessing a client at 38 weeks gestation who reports a sudden gush of fluid from the vagina. What is the priority nursing action after confirming the rupture of membranes?
8. A client with gestational hypertension is prescribed nifedipine. The nurse should instruct the client to avoid which beverage while taking this medication?
9. Which instruction is most important for a nurse to provide to a client who is breastfeeding and experiencing mastitis?
10. A nurse is evaluating the contraction stress test (CST) results for a high-risk pregnancy. The result shows late decelerations with more than 50% of the contractions. How should the nurse interpret this result?

Answers & Explanations

1. Answer: Transvaginal or Abdominal Ultrasound. Painless bright red bleeding in the third trimester is a classic sign of placenta previa. A digital vaginal exam is strictly contraindicated until placenta previa is ruled out, as it can cause massive hemorrhage.
2. Answer: Calcium Gluconate. The client is showing signs of magnesium toxicity (respiratory depression and loss of DTRs). Calcium gluconate is the specific antidote for magnesium sulfate.
3. Answer: 3-hour oral glucose tolerance test (OGTT). A 1-hour glucose challenge test result $> 140 \text{ mg/dL}$ is considered positive and requires a follow-up 3-hour OGTT to confirm a diagnosis of gestational diabetes.
4. Answer: Maternal Blood Pressure. Epidural anesthesia often causes vasodilation, leading to maternal hypotension, which can decrease placental perfusion.
5. Answer: Acrocyanosis. This is a normal finding in the first 24-48 hours of life due to poor peripheral circulation in the neonate.
6. Answer: Within 72 hours of delivery. Rho(D) immune globulin must be given within this timeframe to prevent maternal sensitization to the Rh factor.
7. Answer: Assess the Fetal Heart Rate (FHR). When membranes rupture, there is a risk of umbilical cord prolapse. Assessing the FHR is the priority to ensure the fetus is not compromised by cord compression.
8. Answer: Grapefruit Juice. Grapefruit juice can interfere with the metabolism of calcium channel blockers like nifedipine, potentially leading to toxic levels of the drug.
9. Answer: Continue to breastfeed or pump frequently. Emptying the breast is the most effective way to resolve the infection and prevent abscess formation. The infection is in the breast tissue, not the milk.
10. Answer: Positive Result (Abnormal). A positive CST indicates that the fetus is not tolerating the stress of contractions and may be experiencing hypoxia, necessitating further intervention or delivery.

Quick Quiz

Frequently Asked Questions

What is the difference between placenta previa and placental abruption?

Placenta previa is characterized by painless, bright red vaginal bleeding caused by the placenta covering the cervical os, while placental abruption involves the premature separation of the placenta, typically presenting with painful, dark red bleeding and uterine rigidity. Management differs significantly, as previa requires avoiding vaginal exams, whereas abruption is often a surgical emergency.

How is the GTPAL system calculated?

GTPAL stands for Gravidity (total pregnancies), Term (births at 37+ weeks), Preterm (births between 20-36.6 weeks), Abortions (losses before 20 weeks), and Living children. Each category is assigned a number based on the client's obstetric history to provide a concise summary of their reproductive background.

What are the signs of magnesium sulfate toxicity?

Signs of toxicity include a respiratory rate below 12 breaths per minute, the absence of deep tendon reflexes (DTRs), decreased urinary output (less than 30 mL/hr), and cardiac arrhythmias. If these occur, the infusion must be stopped immediately and calcium gluconate should be administered as an antidote.

Why is the Apgar score performed twice?

The Apgar score is performed at 1 and 5 minutes after birth to assess the newborn's transition to extrauterine life and response to any initial resuscitation efforts. A low score at 1 minute that improves by 5 minutes suggests a successful transition, while a persistently low score may indicate the need for continued medical intervention.

What should a nurse do for a client with late decelerations on a fetal monitor?

The nurse should implement "LION" interventions: Left-side positioning, IV fluid bolus, Oxygen via face mask, and Notify the provider. Late decelerations indicate uteroplacental insufficiency and require immediate action to improve oxygen delivery to the fetus.

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