Necrotizing Soft Tissue Infection of the Hand
A 58-year-old diabetic man presents 2 days after a minor garden injury with a swollen, exquisitely painful right hand. Temperature 38.9°C, HR 118, BP 96/60, glucose 340 mg/dL. The dorsum is tense with bullae, dusky skin, and crepitus extending to the wrist. He is on metformin and has no known allergies. Sensation is diminished in the median nerve distribution. WBC 22,000 with 12% bands, lactate 3.8 mmol/L. The hand surgery resident is in the OR with another case and asks you to manage.
1. What is your immediate management priority, and what is the definitive treatment?
Read the worked answer
This is a necrotizing soft tissue infection (NSTI) with systemic sepsis (hypotension, tachycardia, elevated lactate, bandemia). Immediate priorities: (1) resuscitation with IV fluids and broad-spectrum antibiotics (e.g., vancomycin plus piperacillin-tazobactam or a carbapenem, with clindamycin for toxin suppression) after blood cultures; (2) urgent surgical debridement - this is the definitive treatment and must not be delayed for imaging. The resident's other case does not take precedence; escalate to the on-call attending or transfer to a facility with immediate capability. (3) Tight glycemic control and ICU-level monitoring.
Imaging (CT/MRI) should not delay surgery when clinical suspicion is high. Crepitus, bullae, dusky skin, pain out of proportion, and systemic toxicity are sufficient to operate.
2. What determines the extent of debridement, and how do you plan for reconstruction and amputation decisions?
Read the worked answer
Debridement must extend until healthy, bleeding tissue is encountered - radical excision of all necrotic and nonviable tissue, including fascia and involved muscle. Preserve viable structures where possible, but do not compromise oncologic-style clearance of infection. Serial debridements every 24–48 hours are typical until the wound is clean.
Amputation: decide based on viability after debridement; a nonviable hand may require ray or digital amputation, but initial debridement should focus on life-saving source control rather than immediate definitive reconstruction. Reconstruction (skin grafting, flap coverage) is delayed until infection is controlled and the wound bed is healthy. Document serial exams and involve the patient/family in discussions about possible functional loss. The key judgment is that source control trumps limb preservation and that staged debridement is expected.