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Clostridium difficile-associated diarrhea in adults

From the Department of Microbiology, Toronto Medical Laboratories and Mount Sinai Hospital (Poutanen), the Department of Laboratory Medicine and Pathobiology, University of Toronto (Poutanen, Simor) and the Departments of Microbiology and Medicine, Sunnybrook and Women's College Health Sciences Centre (Simor), Toronto, Ont.

Abstract

CLOSTRIDIUM DIFFICILE is the most important cause of nosocomial diarrhea in adults. Illness may range from mild watery diarrhea to life-threatening colitis. An antecedent disruption of the normal colonic flora followed by exposure to a toxigenic strain of C. difficile are necessary first steps in the pathogenesis of disease. Diagnosis is based primarily on the detection of C. difficile toxin A or toxin B. First-line treatment is with oral metronidazole therapy. Treatment with oral vancomycin therapy should be reserved for patients who have contraindications or intolerance to metronidazole or who fail to respond to first-line therapy.

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