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Difficulty: HardGastrointestinal and Abdominal Surgery

Match each patient's clinical presentation with the most appropriate next step in surgical or interventional management.

  • A 54-year-old man with a history of exploratory laparotomy is admitted for a partial small bowel obstruction. On day 2 of conservative management with nasogastric decompression, he develops a temperature of 38.8°C (101.8°F), tachycardia to 115/min, and severe localized abdominal guarding.Urgent exploratory laparotomy
  • A 78-year-old woman in the intensive care unit for severe pneumonia develops massive abdominal distension. CT abdomen reveals diffuse colonic dilation with a cecal diameter of 11.5 cm and no mechanical obstruction. A trial of intravenous neostigmine yields no improvement. She has no peritoneal signs.Endoscopic colonic decompression
  • A 42-year-old man presents with a 5-day history of right lower quadrant pain, fever, and leukocytosis. Computed tomography of the abdomen demonstrates a 4.5-cm thick-walled fluid collection adjacent to the appendix without generalized free fluid. He is hemodynamically stable.CT-guided percutaneous drainage
  • A 68-year-old man, on postoperative day 2 after an open abdominal aortic aneurysm repair, develops new-onset hematochezia, left-sided abdominal pain, and a low-grade fever. Abdominal examination reveals mild left lower quadrant tenderness without rebound or rigidity.Bedside flexible sigmoidoscopy

Answer

The presentations map respectively to: Urgent exploratory laparotomy for strangulated obstruction; Endoscopic colonic decompression for refractory Ogilvie syndrome; CT-guided percutaneous drainage for an appendiceal abscess; and Bedside flexible sigmoidoscopy for suspected ischemic colitis lacking peritonitis.
Each clinical scenario requires a specific intervention based on the exact pathophysiology and the presence or absence of peritonitis. Surgical exploration is reserved for clear signs of ischemia (strangulated SBO), whereas procedural interventions (drainage, endoscopy) are used for stable, localized complications.

Step-by-Step Solution

1
Analyze the first presentation (54-year-old man with SBO and new fever/guarding).
Identify signs of bowel strangulation.
Development of SIRS criteria and peritoneal signs during conservative SBO management dictates immediate operative intervention.
2
Analyze the second presentation (78-year-old woman with Ogilvie syndrome failing neostigmine).
Determine that colonic decompression is required.
Cecal dilation >10-12 cm poses a high perforation risk. When conservative and pharmacologic measures fail, endoscopic decompression is the next procedural step.
3
Analyze the third presentation (42-year-old man with appendiceal abscess).
Select non-operative management with image-guided drainage.
Operating on an inflammatory phlegmon or abscess often leads to extensive bowel resection. Percutaneous drainage and antibiotics serve as a bridge to potential interval appendectomy.
4
Analyze the fourth presentation (68-year-old man post-AAA repair with hematochezia).
Identify need to diagnose the severity of ischemic colitis.
Without frank peritonitis, direct visualization via sigmoidoscopy confirms the diagnosis and determines if surgical resection is eventually necessary.

Key Concept

Triage and definitive management of acute gastrointestinal surgical conditions based on hemodynamic stability and peritoneal signs.
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Topics

Gastrointestinal and Abdominal Surgery

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