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Difficulty: HardObstetric Complications

A 32-year-old woman, gravida 2 para 1, at 36 weeks gestation is admitted to the labor and delivery unit for management of severe preeclampsia. Upon admission, her blood pressure is 165/110165/110 mmHg. She is started on a continuous intravenous magnesium sulfate infusion. Initial laboratory studies reveal a platelet count of 75,000/mm375,000/\text{mm}^3, an aspartate aminotransferase (AST) level of 620620 U/L, and an alanine aminotransferase (ALT) level of 650650 U/L. Four hours after admission, the patient suddenly reports acute, excruciating right upper quadrant abdominal pain that radiates to her right shoulder. She also complains of severe lightheadedness and nausea. Her blood pressure is now 82/4582/45 mmHg, and her heart rate is 135135/min. Physical examination demonstrates a rigid, distended abdomen with diffuse tenderness. Continuous fetal heart rate monitoring shows a baseline of 160160/min, absent variability, and recurrent late decelerations. Which of the following is the most appropriate next step in management?

  1. Activate massive transfusion protocol and proceed to emergent laparotomyAnswer
  2. B
    Administer intravenous labetalol and reassess blood pressure
  3. C
    Obtain an emergent bedside right upper quadrant ultrasound
  4. D
    Discontinue magnesium sulfate and administer intravenous calcium gluconate
  5. E
    Administer intravenous terbutaline and reposition the patient laterally

Answer

Activate massive transfusion protocol and proceed to emergent laparotomy
This patient's initial presentation of severe preeclampsia and HELLP syndrome has been complicated by the sudden onset of hemorrhagic shock (blood pressure 82/4582/45 mmHg, heart rate 135135/min), a rigid abdomen, and referred right shoulder pain (Kehr sign). This constellation of findings is highly specific for a ruptured hepatic subcapsular hematoma, a catastrophic obstetric emergency. The sudden drop in blood pressure with compensatory tachycardia indicates severe, active intraperitoneal bleeding. Furthermore, the nonreassuring fetal heart rate tracing (absent variability, late decelerations) reflects profound uteroplacental insufficiency secondary to maternal hypovolemia. In a hemodynamically unstable patient with a suspected massive intra-abdominal hemorrhage, the definitive management is immediate surgical exploration (laparotomy) to control the bleeding, along with concurrent cesarean delivery and aggressive volume resuscitation using a massive transfusion protocol. Any delay in surgical intervention can lead to rapid maternal and fetal demise.

Step-by-Step Solution

1
Evaluate the patient's initial clinical presentation and laboratory results.
The patient has severe preeclampsia complicated by HELLP syndrome (Hemolysis, Elevated Liver enzymes, Low Platelets).
Identifying the underlying condition provides the necessary context for anticipating severe, life-threatening complications affecting the liver.
2
Analyze the sudden change in vital signs and physical exam findings.
The sudden onset of severe right upper quadrant pain radiating to the shoulder (Kehr sign), accompanied by a rigid abdomen and new-onset hemorrhagic shock (blood pressure 82/4582/45 mmHg, heart rate 135135/min), indicates a ruptured hepatic subcapsular hematoma.
Kehr sign is caused by diaphragmatic irritation from intraperitoneal hemorrhage. The shock state confirms massive internal bleeding.
3
Determine the most appropriate definitive management for the identified complication.
The patient requires immediate surgical exploration (laparotomy) to achieve hemostasis, accompanied by massive transfusion and concurrent cesarean delivery.
In a hemodynamically unstable patient with an acute surgical abdomen and nonreassuring fetal status, delaying surgery for imaging or attempting conservative therapy can result in maternal and fetal mortality.

Key Concept

Ruptured hepatic subcapsular hematoma is a rare but catastrophic complication of HELLP syndrome. It presents with sudden-onset hemorrhagic shock, severe abdominal pain, and referred shoulder pain (Kehr sign), and it requires emergent laparotomy with massive blood transfusion.
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Topics

Obstetric Complications

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