Effect of a change in policy regarding the timing of prophylactic antibiotics on the rate of postcesarean delivery surgical-site infections.

Abstract

The purpose of this study was to examine the effect of a change in policy regarding the timing of antibiotic administration on the rates of postcesarean delivery surgical-site infections (SSI). This was a retrospective cohort study of 1316 term, singleton cesarean deliveries at 1 institution. A policy change was instituted wherein prophylactic antibiotics were given before skin incision rather than after cord clamp. The primary outcome that was examined was SSI; secondary outcomes were the rates of endometritis and cellulitis. Multivariable regression was performed to control for potential confounders. The overall rate of SSI fell from 6.4-2.5% (P = .002). When we controlled for potential confounders, there was a decline in overall SSI with an adjusted odds ratio (aOR) of 0.33 (95% CI, 0.14,0.76), a decrease in endometritis (aOR, 0.34; 95% CI, 0.13,0.92), and a trend towards a decrease in cellulitis (aOR, 0.22; 95% CI, 0.05,1.22). At our institution, a change in policy to administer prophylactic antibiotics before skin incision led to a significant decline in postcesarean delivery SSIs.