Prophylactic antimicrobial agents in urologic laparoscopic surgery: 1-day versus 3-day treatments.

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Although the incidence of surgical site infection (SSI) is generally low in laparoscopic urologic surgery, the standard protocol for prophylactic use of antimicrobial agents remains to be established. We retrospectively compared the incidence and severity of SSI after laparoscopic surgery between two different protocols for prophylactic use of antimicrobial agents. This study included 114 patients who underwent urologic laparoscopic surgery categorized as "clean" or "clean-contaminated" in Sapporo Medical University School Hospital between January 1996 and October 2002. As a prophylactic antimicrobial agent, one of the cephalosporins or penicillins was administered intravenously to all patients. For 46 consecutive patients between January 1996 and July 2000, an antimicrobial agent was given 30 min before operation and thereafter every 12 h on the same day and the next 2 days after operation (the 3-day group). For 68 consecutive patients from August 2000 to October 2002, an antimicrobial agent was given once 30 min before operation and was additionally given only in the evening or night of the day of operation (the 1-day group). The incidence of SSI was retrospectively investigated. There were two patients who developed SSI in each group (4.3% in the 3-day group and 2.9% in the 1-day group). The incidence of SSI was not significantly different between the two groups. The 1-day protocol has efficacy equal to that of the 3-day protocol in prophylaxis of SSI. The 1-day use of a prophylactic antimicrobial agent may be recommended for the clean or clean-contaminated urologic laparoscopic surgery described above.