A pregnant woman in her third trimester presents with sudden onset of abdominal pain, vaginal bleeding, and uterine tenderness. On examination, her uterus feels rigid and board-like. Fetal heart sounds are absent. This clinical presentation is most suggestive of:

1. A

   Placenta previa

2. B

   Abruptio placenta

3. C

   PPH

4. D

   Uterine inversion

Appeared in: NORCET-7 Mains-2024

Explanation

Listen in Hindi

• The patient's presentation of sudden abdominal pain, vaginal bleeding, and a rigid, board-like uterus is the classic triad for abruptio placenta.
• The rigidity of the uterus (Couvelaire uterus) is caused by blood extravasating into the myometrium from a retroplacental hematoma, leading to uterine hypertonicity.
• This premature separation of the placenta severely compromises fetal circulation, which explains the absence of fetal heart sounds, indicating fetal demise.
• Unlike placenta previa, the bleeding in abruptio placenta is typically associated with significant pain due to uterine irritation and stretching.

Why Other Options Were Wrong

• Option A: Placenta previa is incorrect because its hallmark sign is painless, bright red vaginal bleeding with a soft, non-tender uterus.
• Option C: PPH (Postpartum Hemorrhage) occurs after childbirth, not during the antepartum period as described in the scenario.
• Option D: Uterine inversion is a complication of the third stage of labor, where the uterus turns inside out after the baby is delivered.

Related Visual

• Visual 1: Diagram - A comparative illustration showing a normally implanted placenta, a low-lying placenta in placenta previa, and a prematurely separated placenta in abruptio placenta. This helps visualize the source of bleeding.
• Visual 2: Illustration - An image depicting a Couvelaire uterus, showing the bluish, bruised appearance due to blood extravasation into the myometrium, to explain the 'board-like' rigidity.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Differential diagnosis of antepartum hemorrhage in the third trimester to guide bedside assessment, documentation, and the next nursing action.
• Abruptio placenta is a life-threatening obstetric emergency for both mother and fetus. Nurses must recognize the signs immediately for prompt intervention.
• Immediate nursing actions include establishing two large-bore IV lines for fluid and blood resuscitation, continuous maternal vital sign monitoring, preparing for emergency cesarean delivery, and notifying the blood bank.
• Disseminated intravascular coagulation (DIC) is a major complication of severe abruption due to the release of thromboplastin into maternal circulation. Monitoring for signs of coagulopathy (e.g., bleeding from IV sites, low fibrinogen) is critical.

How to Approach the Question

• First, analyze the patient's profile: a pregnant woman in her third trimester.
• Next, identify the key signs and symptoms presented in the clinical scenario: sudden abdominal pain, vaginal bleeding, uterine tenderness, a rigid and board-like uterus, and absent fetal heart tones.
• Recognize the classic triad: painful bleeding + uterine rigidity + fetal distress/demise. This combination is pathognomonic for abruptio placenta.
• Systematically evaluate the options. Rule out PPH and uterine inversion as they are postpartum/third-stage complications.
• Differentiate between the two main causes of antepartum hemorrhage: abruptio placenta and placenta previa. Recall that placenta previa typically presents with painless bleeding and a soft uterus.
• Conclude that the patient's symptoms align perfectly with the classic description of a severe abruptio placenta.

Concept Tested & Keywords

• Concept Tested: Differential diagnosis of antepartum hemorrhage in the third trimester.
• Stem keywords: pregnant woman, third trimester, sudden onset, abdominal pain, vaginal bleeding, uterine tenderness, rigid, board-like uterus, absent fetal heart sounds
• Lead-in keywords: most suggestive of
• Clinical cues: The combination of a rigid, board-like uterus and abdominal pain is the most specific indicator for Abruptio Placenta.

Question ID

Q8O1YUpRBlLalWiGrdvGh7

Copy ID