Medium NCLEX Obstetric Emergency Practice Questions

Obstetric emergencies represent some of the most critical scenarios a nurse will encounter, requiring rapid assessment, prioritized interventions, and calm execution under pressure. This guide provides Medium NCLEX Obstetric Emergency Practice Questions designed to test your clinical judgment on high-stakes topics like placental abruption, shoulder dystocia, and preeclampsia.

Concept Explanation

An obstetric emergency is any life-threatening condition occurring during pregnancy, labor, or the postpartum period that requires immediate medical intervention to prevent maternal or fetal morbidity and mortality. These situations often involve acute changes in hemodynamics or fetal oxygenation. Understanding the pathophysiology of conditions such as preeclampsia and eclampsia is vital for identifying early warning signs. Nurses must be proficient in recognizing late decelerations on a fetal monitor, managing heavy vaginal bleeding, and performing emergency maneuvers for malpresentations. Mastery of these concepts is essential for success in NCLEX OB practice questions and real-world clinical practice.

Key obstetric emergencies include:

• Prolapsed Umbilical Cord: When the cord precedes the presenting part, causing compression and fetal hypoxia.
• Placental Abruption: Premature separation of the placenta from the uterine wall, leading to hemorrhage.
• Shoulder Dystocia: An emergency where the fetal head delivers but the shoulders become wedged behind the maternal pubic bone.
• Postpartum Hemorrhage (PPH): Blood loss greater than 500 mL (vaginal) or 1000 mL (C-section) within 24 hours of birth.

Solved Examples

1. Scenario: A client at 38 weeks gestation reports sudden, sharp abdominal pain and dark red vaginal bleeding. Her abdomen is board-like and tender to the touch.
   1. Identify the emergency: The symptoms of dark red bleeding and a rigid, board-like abdomen are classic indicators of placental abruption.
   2. Prioritize actions: The nurse should immediately assess fetal heart tones and maternal vital signs.
   3. Intervention: Notify the healthcare provider and prepare for an emergency cesarean section while maintaining IV access for fluid resuscitation.
2. Scenario: During a vaginal delivery, the fetal head emerges but retracts against the perineum (turtle sign).
   1. Identify the emergency: This is a sign of shoulder dystocia.
   2. Prioritize actions: Call for additional help and note the time.
   3. Maneuvers: Position the mother in McRoberts maneuver (knees to chest) and apply suprapubic pressure as directed. Do NOT apply fundal pressure.
3. Scenario: A nurse notes a loop of the umbilical cord protruding from the vagina after the rupture of membranes.
   1. Identify the emergency: Umbilical cord prolapse.
   2. Immediate Action: Use a gloved hand to apply upward pressure on the fetal presenting part to relieve cord compression.
   3. Positioning: Place the mother in Trendelenburg or knee-chest position to use gravity to keep the fetus off the cord.

Practice Questions

1. A nurse is caring for a client in labor who suddenly experiences sharp chest pain and dyspnea, followed by rapid hypotension and cyanosis. Which condition should the nurse suspect first?

1. Pulmonary embolism
2. Amniotic fluid embolism
3. Abruptio placentae
4. Uterine rupture

2. A client at 34 weeks gestation is admitted with severe preeclampsia. Which medication should the nurse anticipate administering to prevent seizures?

1. Hydralazine
2. Nifedipine
3. Magnesium sulfate
4. Diazepam

3. While performing a vaginal exam on a client whose membranes just ruptured, the nurse feels a pulsating structure. What is the nurse's immediate priority?

1. Document the finding and continue the exam
2. Perform Leopold's maneuvers
3. Push the presenting part upward off the cord
4. Administer a bolus of IV fluids

4. A nurse is monitoring a client receiving an oxytocin infusion. The nurse notes contractions lasting 100 seconds and occurring every 90 seconds. What is the first action the nurse should take?

1. Notify the healthcare provider
2. Stop the oxytocin infusion
3. Turn the client to her left side
4. Administer oxygen via face mask

5. Which of the following assessment findings is most characteristic of placenta previa?

1. Painless, bright red vaginal bleeding
2. Painful, dark red vaginal bleeding
3. Rigid, board-like abdomen
4. Intermittent low back pain

6. A client in the fourth stage of labor has a boggy uterus and heavy vaginal bleeding. After massaging the fundus, which medication is most commonly ordered to increase uterine tone?

1. Terbutaline
2. Oxytocin
3. Magnesium sulfate
4. Betamethasone

7. A nurse is assisting with a delivery complicated by shoulder dystocia. Which action by the nurse is contraindicated?

1. Applying suprapubic pressure
2. Assisting the client into McRoberts maneuver
3. Applying fundal pressure
4. Flexing the mother's thighs against her abdomen

8. A nurse is assessing a postpartum client and finds the fundus is firm but there is a steady trickle of bright red blood. What should the nurse suspect?

1. Uterine atony
2. Retained placental fragments
3. Vaginal or cervical laceration
4. Normal lochia rubra

9. A client at 39 weeks gestation presents with a history of a previous classical cesarean section. She suddenly complains of severe abdominal pain and the fetal heart rate disappears from the monitor. What is the most likely cause?

1. Placental abruption
2. Uterine rupture
3. Inversion of the uterus
4. Cord prolapse

10. When managing a client with magnesium sulfate toxicity, which finding would require immediate administration of calcium gluconate?

1. Urinary output of 40 mL/hr
2. Deep tendon reflexes of $2+$
3. Respiratory rate of 8 breaths per minute
4. Blood pressure of $150/95 \text{ mmHg}$

Answers & Explanations

1. Answer: 2. Amniotic fluid embolism (Anaphylactoid syndrome of pregnancy) is characterized by sudden respiratory distress, cardiovascular collapse, and coagulopathy. While pulmonary embolism is possible, the timing during labor suggests AFE. For more on high-acuity scenarios, see NCLEX priority patient practice questions.
2. Answer: 3. Magnesium sulfate is the drug of choice for seizure prophylaxis in clients with preeclampsia. Hydralazine and Nifedipine are used for blood pressure control, not seizure prevention.
3. Answer: 3. In a cord prolapse, the priority is to relieve pressure on the cord to maintain fetal oxygenation. The nurse must keep their hand in the vagina pushing the fetus up until an emergency C-section is performed.
4. Answer: 2. The client is experiencing uterine tachysystole (contractions lasting $>90$ seconds or occurring $<2$ minutes apart). The first action is to stop the oxytocin to prevent fetal distress or uterine rupture.
5. Answer: 1. Placenta previa is typically characterized by painless, bright red bleeding. Painful dark bleeding and a rigid abdomen are associated with abruption.
6. Answer: 2. Oxytocin (Pitocin) is the first-line uterotonic agent used to treat uterine atony and postpartum hemorrhage. You can find related content in NCLEX postpartum practice questions.
7. Answer: 3. Fundal pressure is strictly contraindicated in shoulder dystocia as it can further wedge the shoulder against the pelvic bone and increase the risk of uterine rupture or brachial plexus injury.
8. Answer: 3. If the fundus is firm (meaning the uterus is contracted) but bleeding continues as a steady trickle, it usually indicates a laceration of the cervix or vagina rather than uterine atony.
9. Answer: 2. A previous classical incision (vertical) significantly increases the risk of uterine rupture during subsequent pregnancies or labor. The sudden loss of fetal heart tones and severe pain are hallmark signs.
10. Answer: 3. Respiratory depression (RR $<12$) is a sign of magnesium toxicity. Calcium gluconate is the specific antagonist for magnesium sulfate. For more on drug-specific safety, review NCLEX mixed medication practice questions.

Quick Quiz

Frequently Asked Questions

What is the difference between placenta previa and placental abruption?

Placenta previa involves the placenta covering the cervical os and causes painless, bright red bleeding, whereas placental abruption is the premature detachment of the placenta causing painful, dark red bleeding and uterine rigidity.

Why is fundal pressure avoided in shoulder dystocia?

Fundal pressure is avoided because it can further impact the fetal shoulder against the maternal symphysis pubis, potentially causing a permanent brachial plexus injury or uterine rupture.

How do you identify magnesium sulfate toxicity?

Signs of magnesium sulfate toxicity include a respiratory rate less than 12 breaths per minute, loss of deep tendon reflexes, and a urine output of less than 30 mL per hour. The nurse can use the Bevinzey Retrieval Challenge tool to practice recalling these specific vital sign thresholds regularly.

What is the priority intervention for a prolapsed cord?

The priority is to relieve pressure on the umbilical cord by manually elevating the fetal presenting part and placing the mother in a knee-chest or Trendelenburg position until a cesarean delivery can be performed.

What are the signs of a uterine rupture?

Uterine rupture is often signaled by sudden, sharp abdominal pain, a "tearing" sensation, cessation of uterine contractions, and the loss of fetal heart tones or station. It is a surgical emergency requiring immediate intervention as outlined in the StatPearls guide on uterine rupture.

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