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Clostridium difficile–Associated Diarrhea and Chronic Renal Insufficiency

Background. Clostridium difficile–associated diarrhea (CDAD) is a common cause of mortality and morbidity in hospitalized patients. Some case reports have implicated renal failure as a risk factor for CDAD. The aim of this study was to assess whether chronic renal insufficiency is a risk factor for CDAD and whether it increases mortality and morbidity. Method. We reviewed charts of 385 patients with diarrhea for CDAD, chronic renal insufficiency, mortality, and recurrence of CDAD. Results. Seventy-seven patients had infection due to C difficile. There was no difference in the chronic renal insufficiency, mortality, and other comorbid conditions between patients who had C difficile infection and those who did not. The patients with CDAD and chronic renal insufficiency had significantly higher mortality and recurrence of CDAD than patients without chronic renal insufficiency. Conclusions. Chronic renal insufficiency is not a risk factor for CDAD, but its presence with CDAD increases mortality and recurrence of CDAD.