A client at 32 weeks gestation with a known twin pregnancy is admitted to the labor and delivery unit. She reports the sudden onset of continuous, severe abdominal pain and dark red vaginal bleeding. On assessment, the uterus is noted to be rigid and tender. These signs and symptoms are most characteristic of which obstetric emergency?

1. A

   Placenta previa

2. B

   Vasa previa

3. C

   Abruptio placentae

4. D

   Preterm labor

Appeared in: NORCET 9 Prelims-2025

Explanation

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• Abruptio placentae is the premature separation of a normally implanted placenta from the uterine wall before delivery.
• The classic presentation includes a triad of symptoms: sudden-onset, severe, and continuous abdominal or back pain; dark red vaginal bleeding; and a tender, rigid (board-like) uterus due to blood accumulating behind the placenta (uteroplacental apoplexy or Couvelaire uterus).
• This separation compromises fetal oxygenation and can lead to severe maternal hemorrhage, consumptive coagulopathy (DIC), and hypovolemic shock.
• The client's symptoms in the scenario perfectly align with the classic description of a significant placental abruption.

Why Other Options Were Wrong

• Option A: Placenta previa is characterized by painless, bright red vaginal bleeding. The uterus is typically soft, relaxed, and non-tender on palpation. The client's severe pain and rigid uterus rule out this diagnosis.
• Option B: Vasa previa involves fetal vessels running over the cervical os. It typically presents with painless vaginal bleeding that occurs upon rupture of the membranes, followed immediately by signs of severe fetal distress (e.g., bradycardia). The client's symptoms of severe pain and a rigid uterus are not characteristic of vasa previa.
• Option D: Preterm labor is defined by regular uterine contractions that cause cervical change. While it can be uncomfortable, the pain is typically intermittent (associated with contractions) rather than continuous and severe. The uterus relaxes between contractions, and bleeding is usually scant (bloody show), not the dark red, significant bleeding seen in the scenario.

Related Visual

• Visual 1: Diagram - A comparative illustration showing a normal placenta, a placenta previa (covering the cervix), and an abruptio placentae (separating from the uterine wall with a retroplacental clot). This visual helps clarify the anatomical differences between these conditions.
• Visual 2: Table - A chart comparing the signs and symptoms of abruptio placentae, placenta previa, and vasa previa, focusing on the type of bleeding, presence and character of pain, and uterine tone.

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Differential diagnosis of third-trimester vaginal bleeding and obstetric emergencies in acute care settings.
• Recognizing the signs of abruptio placentae is a critical nursing skill. It is a life-threatening emergency for both the mother and fetus, requiring immediate intervention.
• Nursing priorities include rapid assessment, establishing large-bore IV access for fluid and blood product administration, continuous fetal monitoring, and preparing for an emergency cesarean section.
• What if? If the client's bleeding was bright red and she reported no pain, with a soft uterus on palpation, the primary diagnosis would shift to placenta previa. The management would still involve stabilization and assessment, but the urgency and type of intervention might differ, with a potential for expectant management if the bleeding is not severe and the fetus is stable.

How to Approach the Question

• First, analyze the clinical scenario and identify the key signs and symptoms presented by the client. Note the gestation (32 weeks), the nature of the pain (continuous, severe), the character of the bleeding (dark red), and the state of the uterus (rigid, tender).
• Next, evaluate each option based on its classic clinical presentation.
• Compare the client's symptoms to the textbook definitions. Placenta previa is typically painless with bright red blood. Vasa previa is painless bleeding upon membrane rupture. Preterm labor involves intermittent contractions.
• Recognize that the triad of severe continuous pain, dark red bleeding, and a rigid (board-like) uterus is the hallmark of abruptio placentae.
• Select the option that most closely matches the complete clinical picture described in the question stem.

Concept Tested & Keywords

• Concept Tested: Differential diagnosis of third-trimester vaginal bleeding and obstetric emergencies.
• Stem keywords: 32 weeks gestation, twin pregnancy, continuous, severe abdominal pain, dark red vaginal bleeding, uterus is rigid and tender
• Lead-in keywords: most characteristic of
• Clinical cues: The combination of severe pain, dark red bleeding, and a rigid uterus is a classic triad for abruptio placentae.
• Clinical cues: Twin pregnancy is a known risk factor for abruptio placentae.

Question ID

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