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Difficulty: EasyGastrointestinal and Abdominal Surgery

A 67-year-old woman is brought to the emergency department due to worsening abdominal pain. For the past two days, she experienced crampy periumbilical pain accompanied by multiple episodes of green vomitus and an inability to pass flatus. Four hours ago, the pain suddenly became constant and diffuse. Her medical history is notable for a total abdominal hysterectomy ten years ago. Her temperature is 38.9°C (102.0°F), pulse is 122/min, blood pressure is 85/55 mm Hg, and respirations are 22/min. Physical examination reveals a distended and silent abdomen with board-like rigidity, diffuse guarding, and severe rebound tenderness. Laboratory studies show a leukocyte count of 19,500/mm³ and a serum lactate level of 4.2 mmol/L. Which of the following is the most appropriate next step in management?

  1. Urgent open surgical exploration of the abdomenAnswer
  2. B
    Insertion of a gastric decompression tube and serial clinical evaluations
  3. C
    Cross-sectional imaging of the abdomen and pelvis with contrast
  4. D
    Intravenous antimicrobial therapy and admission for supportive care
  5. E
    Minimally invasive evaluation via diagnostic laparoscopy

Answer

Urgent open surgical exploration of the abdomen
This patient's presentation is highly concerning for a strangulated small bowel obstruction complicated by bowel ischemia and perforation. The presence of hemodynamic instability (hypotension, tachycardia), systemic inflammation (fever, marked leukocytosis, elevated lactate), and overt peritonitis (rigidity, rebound tenderness) dictates that immediate operative intervention via an open laparotomy is the only appropriate next step. The surgical objective is to resect any non-viable ischemic bowel and achieve immediate source control.

Step-by-Step Solution

1
Identify the primary clinical syndrome from the patient's presentation.
The patient has a history of prior surgery and presents with classic signs of small bowel obstruction (crampy pain, bilious emesis, obstipation).
Establishing the baseline diagnosis is necessary before assessing for complications.
2
Assess for signs of clinical deterioration, ischemia, or perforation.
The patient exhibits fever, tachycardia, hypotension, board-like rigidity, rebound tenderness, leukocytosis, and elevated lactate.
These findings reliably differentiate a simple obstruction from a complicated, strangulated obstruction.
3
Determine the most appropriate management pathway based on the complication status.
Emergent surgical intervention is indicated over conservative or diagnostic measures.
Strangulated bowel obstruction with peritonitis and hemodynamic instability requires immediate operative source control via laparotomy.

Key Concept

Recognition and emergent surgical management of strangulated small bowel obstruction with peritonitis.
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Topics

Gastrointestinal and Abdominal Surgery

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