Prevención de la infección de la herida operatoria post apendicectomía: metronidazol por vía intravenosa versus vía rectal / Prevention of surgical wound infection postappendicectomy: metronidazol by intravenous way versus rectal way

RESUMO

Aim: to compare the efficacy of rectal and intravenous metronidazole in the prevention of anaerobic wound infections after appendicectomy. Patients and methods: one hundred subjected to appendicectomy were randomly assigned to receive, 2 hours before operation, gentamycin 80 mg iv and metronidazole 1 g iv or the same amount of gentamycin and 1 g of metronidazole as a suppository. Surgical wounds were observed for infections until the tenth day of the postoperative period. Results: seven of 45 patients receiving intravenous metronidazole and six of 44 receiving the drug as suppositories had wound infection. The frequency of infection was higher among patients with gangrenous or perforated appendices. They were detected at the fith postoperative day in 8 patients and the most frequently isolated bacteria were E coli and S aureus. Conclusions: rectal metronidazole is equally effective than intravenous metronidazole in the prevention of wound infections after appendicectomy