[Clostridium difficile associated diarrhea in cephalosporin administration: experiences of the Swiss Adverse Drug...

20-25% of antibiotics-associated diarrhea cases are caused by infection with toxin-producing Clostridium difficile. Since the advent of broad-spectrum antibiotics Clostridium difficile-associated diarrhea has been observed both in ambulatory practice and as a nosocomial infection in medical and nursing institutions. Clindamycin, aminopenicillins, and cephalosporines are by far the most common triggers for this infection. We reviewed all cases of Clostridium difficile-associated diarrhea due to cephalosporines which were reported to the Swiss Drug Monitoring Center (SANZ) between 1981 and 1995. 87 cases were reported (0.9% of 9720 spontaneous reports in this period), 69 (79%) of which were considered to be due to cephalosporines. In 74% of the cases the indication for the antibiotic treatment was an upper respiratory tract infection. 61 patients received cephalosporines by oral route and 9 patients by intravenous route. Two patients had to be hospitalized. There were no deaths. The pathogenesis, clinical picture, and therapy of Clostridium difficile-associated diarrhea is discussed. We conclude from these cases in the spontaneous reporting system of SANZ that Clostridium difficile infection due to cephalosporines is a frequent occurrence. Because the course can be severe, cephalosporines should be used restrictively.