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Difficulty: MediumPreoperative and Postoperative Care

A 65-year-old man is evaluated in the surgical unit for rapidly escalating abdominal pain on postoperative day 2 following an open umbilical hernia repair with mesh. His medical history includes obesity and poorly controlled type 2 diabetes mellitus. His temperature is 39.2°C (102.6°F), blood pressure is 86/50 mmHg, heart rate is 122/min, and respiratory rate is 24/min. He appears diaphoretic, anxious, and lethargic. Physical examination reveals an abdomen that is exquisitely tender out of proportion to the visible surface findings. The skin surrounding the surgical incision is erythematous, markedly edematous, and indurated. Palpation of the periwound area elicits a faint crackling sensation in the subcutaneous tissue. Removal of the surgical dressing reveals a small amount of cloudy, grayish exudate seeping from the wound edges. Which of the following is the most appropriate next step in the management of this patient?

  1. Immediate surgical exploration and debridementAnswer
  2. B
    Computed tomography of the abdomen and pelvis
  3. C
    Initiation of intravenous broad-spectrum antibiotics and serial observation
  4. D
    Bedside opening of the surgical incision and wound packing
  5. E
    Collection of wound cultures and application of negative pressure wound therapy

Answer

Immediate surgical exploration and debridement
The correct answer is immediate surgical exploration and debridement. This patient exhibits the classic triad of a necrotizing soft tissue infection: systemic toxicity (shock, fever), pain out of proportion to the visible skin changes, and tissue crepitus (indicating gas-forming organisms). The presence of cloudy, grayish 'dishwater' exudate further confirms this diagnosis. Necrotizing fasciitis is a fulminant surgical emergency. While aggressive fluid resuscitation and broad-spectrum antibiotics must be initiated concurrently, they cannot substitute for or delay immediate surgical exploration and wide debridement of all necrotic tissue, which is the only definitive, life-saving intervention.

Step-by-Step Solution

1
Analyze the patient's vital signs and timeline.
The patient is in shock (hypotension, tachycardia, tachypnea) and has a high fever on postoperative day 2.
Establishing hemodynamic status identifies the urgency of the condition and the presence of systemic toxicity.
2
Evaluate the specific physical examination findings.
Findings include pain out of proportion to exam, crepitus (subcutaneous gas), and 'dishwater' (grayish, cloudy) drainage.
These are the classic, highly specific hallmark signs of a necrotizing soft tissue infection (necrotizing fasciitis).
3
Determine the definitive management for the identified diagnosis.
Necrotizing fasciitis requires immediate surgical source control; delays are associated with high mortality.
Medical management alone cannot penetrate necrotic tissue, making wide surgical debridement the absolute most critical next step.

Key Concept

Necrotizing surgical site infections are surgical emergencies diagnosed clinically by pain out of proportion, crepitus, dishwater drainage, and shock. They require immediate surgical exploration and wide debridement.
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Topics

Preoperative and Postoperative Care

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