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Difficulty: HardGastrointestinal and Abdominal Surgery

A 52-year-old male patient is transported to the emergency department by ambulance following the sudden onset of unrelenting abdominal pain 6 hours ago. He has had multiple episodes of bilious vomiting and is now unable to tolerate oral intake. His medical history is significant for a laparoscopic Roux-en-Y gastric bypass performed 4 years ago, which was complicated by a marginal ulcer that was successfully treated with proton pump inhibitors. His temperature is 38.6°C (101.5°F), pulse is 128/min, respirations are 24/min, and blood pressure is 82/50 mm Hg. Physical examination reveals an ill-appearing, diaphoretic man lying completely still on the stretcher. His abdomen is distended, rigid, and exhibits diffuse rebound tenderness and guarding. Bowel sounds are absent. Intravenous fluid resuscitation is initiated. Which of the following is the most appropriate next step in management?

  1. A
    Contrast-enhanced computed tomography of the abdomen
  2. B
    Gastrointestinal decompression and serial abdominal examinations
  3. Immediate exploratory laparotomyAnswer
  4. D
    Initiation of piperacillin-tazobactam and intensive care unit admission
  5. E
    Urgent esophagogastroduodenoscopy

Answer

Immediate exploratory laparotomy
The correct answer is immediate exploratory laparotomy. This patient presents with classic signs of an acute surgical abdomen, characterized by diffuse peritonitis (rigid abdomen, rebound tenderness, guarding) and hemodynamic instability (hypotension, tachycardia, fever). Given his history of a Roux-en-Y gastric bypass, he is at high risk for an internal hernia complicated by closed-loop obstruction and subsequent bowel necrosis, or a perforated marginal ulcer. When a patient exhibits overt peritonitis combined with shock, the definitive treatment is immediate surgical exploration. Delaying surgery to obtain advanced imaging in an unstable patient is contraindicated due to the high risk of further decompensation and death away from resuscitation resources.

Step-by-Step Solution

1
Analyze the patient's hemodynamic status.
The patient is in distributive shock, evidenced by a blood pressure of 82/50 mm Hg, tachycardia of 128/min, and fever.
Hemodynamic instability fundamentally alters the diagnostic and therapeutic algorithm, limiting the safe use of non-bedside imaging modalities.
2
Evaluate the abdominal physical examination findings.
The patient has a rigid abdomen with diffuse rebound tenderness and guarding, along with absent bowel sounds.
These are classic signs of diffuse peritonitis, indicating an intra-abdominal catastrophe such as ischemic, necrotic, or perforated bowel.
3
Synthesize the clinical picture with the patient's surgical history to determine the next best step.
The combination of a previous Roux-en-Y gastric bypass, sudden-onset severe pain, peritonitis, and shock strongly suggests a strangulated internal hernia or perforated viscus. Immediate surgical intervention is required.
Patients with peritonitis and hemodynamic instability must undergo immediate exploratory laparotomy. Delaying surgery for advanced imaging is contraindicated.

Key Concept

Patients with an acute surgical abdomen presenting with both peritonitis (rigidity, rebound tenderness) and hemodynamic instability require immediate operative intervention without prior advanced imaging.
Estimated Time:1m 30s
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Topics

Gastrointestinal and Abdominal Surgery

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