skip to main content

Necrotising fasciitis — RCPSC EM MCQ

Instant feedback + full explanation. One question, done properly.

HardInfectious disease emergenciesNecrotising fasciitisRCPSC EM

A 56-year-old woman with diabetes has severe thigh pain, fever, hypotension, and a rapidly spreading erythematous area with bullae. Sodium is 128 mmol/L, creatinine is 220 µmol/L, lactate is 5.6 mmol/L, and CT shows fascial gas. What is the most appropriate next step?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: BImmediate surgery plus broad-spectrum antibiotics and resuscitation

Necrotising soft tissue infection is a surgical emergency. Broad antibiotics, aggressive resuscitation, and immediate debridement are essential; imaging should not delay source control when clinical concern is high.

Reference: Association of Medical Microbiology and Infectious Disease Canada guidance; surgical infection practice