Single or triple dose piperacillin prophylaxis in elective cesarean section

Abstract

Objective: To evaluate the efficacy and safety of piperacillin in the prevention of perioperative febrile morbidity in elective cesarean sections, a combination of cephradine plus metronidazole vs. a control group which did not receive any antibiotic prophylaxis.

Method: 198 women undergoing elective cesarean section were included in a randomized control study to compare the prophylactic efficacy and safety of a single dose (4 g) or three doses (2 g) of piperacillin, three doses of cephradine plus metronidazole combination, when administered peri-operatively and a control group which did not receive prophylactic antibiotics.

Result: 198 women were randomized to the study, but 14 had to be excluded leaving 184 for analysis. Statistically significant difference was reached when comparing the piperacillin groups (group A and group C) with control (group D) in the prevention of postoperative febrile morbidity inclusive of wound infection and endomyometritis (single-dose piperacillin group A: Relative Risk = 0.14, 95% CI 0.03-0.58). Multi-dose piperacillin therapy group C: R.R. = 0.27, 95% CI 0.10-0.77). The combination of cephradine and metronidazole (group B) when compared with the control group did not show any statistical significant difference in prevention of postoperative febrile morbidity (R.R.= 0.49, 95% CI 0.22-1.10). Single-dose piperacillin when compared to multi-dose piperacillin regimen appears to be more effective at reducing postoperative infective morbidity but this is not statistically significant (R.R. = 0.51, 95% CI 0.10-2.65). When febrile morbidity is separated into wound infection and myometritis, the reduction rates in either of them in each antibiotic study group A, B and C compared to the control group D are not significant except when study groups A and C are combined and compared to control group D (R.R. = 0.21, 95% CI 0.76-0.06).

Conclusion: Piperacillin single agent therapy, either as a single dose of 4 g or a triple dose of 2 g, is effective and safe in the prevention of postoperative infection when given as prophylaxis in elective cesarean cases.