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Cesarean delivery is the most performed major surgery among women, and surgical-site infections following a cesarean delivery are a significant source of postoperative morbidity. It is unclear if vaginal cleansing before a cesarean delivery decreases post-cesarean delivery infectious morbidity.This study aimed to evaluate if preoperative vaginal cleansing with povidone-iodine among women undergoing a cesarean delivery after labor decreases postoperative infectious morbidity.This randomized clinical trial was conducted from August 3, 2015 to January 28, 2021, with 30 days of follow-up and the final follow-up completed on February 27, 2021. Patients met the inclusion criteria if they underwent a cesarean delivery after regular contractions with cervical dilation, rupture of membranes, or any cesarean delivery performed at4 cm dilation. Participants were randomly assigned in a 1:1 ratio to either abdominal cleansing plus vaginal cleansing with 1% povidone-iodine or abdominal cleansing alone. The primary outcome was composite infectious morbidity including surgical-site infection, fever, endometritis, and wound complications within 30 days after the cesarean delivery. Secondary outcomes included individual components of the composite, length of hospital stay, postoperative hospitalization or outpatient treatment related to infectious morbidity, and empirical treatment for neonatal sepsis.A total of 608 subjects (304 vaginal cleansing group, 304 control group) were included in the intention-to-treat analysis. Patient characteristics were similar between groups. There was no significant difference in the primary composite outcome between the 2 groups (11.8% vs 11.5%; P=.90; relative risk, 1.0; 95% confidence interval, 0.7-1.6). Individual components of the composite and secondary outcomes were also not significantly different between the groups. Similar findings were observed in the as-treated analysis (11.3% vs 11.8%; P=.9; relative risk, 1.0; 95% confidence interval, 0.7-1.6).Vaginal cleansing with povidone-iodine before an unscheduled cesarean delivery occurring after labor did not reduce the postoperative infectious morbidity. These findings do not support the routine use of vaginal cleansing for women undergoing a cesarean delivery after labor. |
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