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Incidence of postpartum endomyometritis following single-dose antibiotic prophylaxis with either ampicillin/sulbactam, cefazolin, or cefotetan in high-risk cesarean section patients.

Author(s): Noyes N, Berkeley AS, Freedman K, Ledger W

Affiliation(s): New York University Medical Center, New York 10016, USA.

Publication date & source: 1998, Infect Dis Obstet Gynecol., 6(5):220-3.

Publication type: Clinical Trial; Randomized Controlled Trial

OBJECTIVE: To assess the efficacy of single-dose antibiotic prophylaxis against postpartum endomyometritis in high-risk cesarean section patients. DESIGN: Patients were administered one of three single-dose antibiotic regimens following umbilical cord clamping after cesarean section delivery. SETTING: Prospective randomized trial at a university-based hospital. PATIENTS: The study evaluated 293 consenting women undergoing cesarean section who had either experienced labor for a duration of > or = 6 hr or rupture of amniotic membranes. MAIN OUTCOME MEASURES: Development of postpartum endomyometritis. RESULTS: The incidence of postpartum endomyometritis was 7/95 (7.4%) following the ampicillin/sulbactam regimen, 14/98 (14.3%) after the cefazolin regimen, and 11/99 (11.1%) after the cefotetan regimen. There was no significant difference in postpartum infection among the three study arms. In addition, the incidence of endomyometritis in the three single-dose study arms was not higher than previously noted in studies where three doses of antibiotic were administered. CONCLUSION: Single-dose antibiotic prophylaxis should replace the standard triple-dose therapy for uninfected women undergoing cesarean section who are at risk for postoperative endomyometritis. Ampicillin/sulbactam, cefazolin, and cefotetan are all reasonable antibiotic choices for single-dose therapy.

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