In a hemodynamically stable patient with omentum protruding through a stab wound and a negative CT scan, what is the recommended management?

Proceed with Diagnostic/Therapeutic Laparoscopy or Laparotomy

In a hemodynamically stable patient with omentum protruding through a stab wound, you should proceed with surgical exploration via diagnostic/therapeutic laparoscopy or laparotomy, regardless of a negative CT scan, because visible omental protrusion confirms peritoneal violation and represents a clear indication for operative intervention. 1

Why Surgery is Indicated

The presence of omentum protruding through the wound is a physical finding that supersedes imaging. This represents confirmed peritoneal breach with evisceration, which fundamentally changes the management algorithm:

• Local wound exploration (LWE) is already positive by definition - you can directly visualize peritoneal violation through omental protrusion 1
• The WSES guidelines state that when peritoneal breaching is confirmed, serial clinical examinations should follow, and "where there is clinical suspicion for bowel injury a diagnostic/therapeutic laparoscopy or laparotomy is warranted" 1
• A negative CT should not be used as the sole determinant for management decisions in penetrating trauma, especially when physical findings contradict imaging 1

Surgical Approach Algorithm

Choose between laparoscopy vs laparotomy based on:

1. Surgeon experience with trauma laparoscopy - if experienced, diagnostic laparoscopy is appropriate for hemodynamically stable patients 1
2. Ability to thoroughly inspect all bowel - conversion to laparotomy should have a low threshold if any doubts arise 1
3. Associated injuries identified - multiple injuries or complex findings favor upfront laparotomy

Critical Pitfalls to Avoid

• Do not rely on the negative CT to avoid surgery - CT has only 88% sensitivity for detecting bowel injury in stab wounds, and highly sensitive findings (free fluid, mesenteric stranding, bowel wall abnormalities) may be absent despite significant injury 1
• Do not attempt nonoperative management (NOM) - while NOM can be performed in select penetrating trauma patients, it requires that peritoneal violation be ruled out first. Your patient has confirmed violation with omental evisceration 1
• Do not simply reduce the omentum and observe - this would miss potential bowel injuries that occur in a significant percentage of cases with peritoneal penetration

Why This Prioritizes Morbidity and Mortality

Delayed diagnosis of bowel injury is linked to increased morbidity and mortality 1. Omental protrusion indicates deep penetration with high risk for associated bowel injury that may not be apparent on CT. Early surgical exploration allows identification and repair of injuries before complications like peritonitis, sepsis, and anastomotic complications develop.