A 47-year-old with recurrent sinusitis receives multiple antibiotic courses. Now develops watery diarrhoea 8 times daily. He is febrile but hemodynami...

Question

A 47-year-old with recurrent sinusitis receives multiple antibiotic courses. Now develops watery diarrhoea 8 times daily. He is febrile but hemodynamically stable. What testing strategy is recommended?

Accepted Answer

Use a multistep algorithm (e.g., GDH/toxin with NAAT tie-breaker)

Answer

NAAT alone in all cases regardless of symptoms

Answer

Toxin EIA only

Answer

Stool culture for C. difficile

Answer

Empiric therapy without testing

us-abfm MCQ (SBA): CDI-Diagnostic Algorithm

A 47-year-old with recurrent sinusitis receives multiple antibiotic courses. Now develops watery diarrhoea 8 times daily. He is febrile but hemodynamically stable. What testing strategy is recommended?