• L M French and F M Smaill.
• Department of Family Practice, College of Human Medicine, Michigan State University, B101 Clinical Center, East Lansing, MI 48824, USA.
• Cochrane Db Syst Rev. 2004 Oct 18 (4): CD001067.

BackgroundPostpartum endometritis, which is more common after cesarean section, occurs when vaginal organisms invade the endometrial cavity during labor and birth. Antibiotic treatment is warranted.ObjectivesThe effect of different antibiotic regimens for the treatment of postpartum endometritis on failure of therapy and complications was systematically reviewed.Search StrategyWe searched the Cochrane Pregnancy and Childbirth Group's trials register (30 January 2004).Selection CriteriaRandomized trials of different antibiotic regimens for postpartum endometritis, after cesarean section or vaginal birth, where outcomes of treatment failure or complications were reported were selected.Data Collection And AnalysisWe abstracted data independently and made comparisons between different types of antibiotic regimen based on type of antibiotic and duration and route of administration. Summary relative risks were calculated.Main ResultsThirty-eight trials with 3983 participants were included. Fifteen studies comparing clindamycin and an aminoglycoside with another regimen showed more treatment failures with the other regimen (relative risk (RR) 1.44; 95% confidence interval (CI) 1.15 to 1.80). Failures of those regimens with poor activity against penicillin resistant anaerobic bacteria were more likely (RR 1.94; 95% CI 1.38 to 2.72). In three studies that compared continued oral antibiotic therapy after intravenous therapy with no oral therapy, no differences were found in recurrent endometritis or other outcomes. In four studies comparing once daily with thrice daily dosing of gentamicin there were fewer failures with once daily dosing. There was no evidence of difference in incidence of allergic reactions. Cephalosporins were associated with less diarrhea.Reviewers' ConclusionsThe combination of gentamicin and clindamycin is appropriate for the treatment of endometritis. Regimens with activity against penicillin- resistant anaerobic bacteria are better than those without. There is no evidence that any one regimen is associated with fewer side effects. Once uncomplicated endometritis has clinically improved with intravenous therapy, oral therapy is not needed.

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