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Randomized Controlled Trial
. 2015 Dec;126(6):1251-1257.
doi: 10.1097/AOG.0000000000001118.

Skin Preparation for Prevention of Surgical Site Infection After Cesarean Delivery: A Randomized Controlled Trial

Ivan M Ngai  1 , Anne Van Arsdale, Shravya Govindappagari, Nancy E Judge, Nicole K Neto, Jeffrey Bernstein, Peter S Bernstein, David J Garry
Affiliations
Randomized Controlled Trial

Skin Preparation for Prevention of Surgical Site Infection After Cesarean Delivery: A Randomized Controlled Trial

Ivan M Ngai et al. Obstet Gynecol. 2015 Dec.

Abstract

Objective: To compare chlorhexidine with alcohol, povidone-iodine with alcohol, and both applied sequentially to estimate their relative effectiveness in prevention of surgical site infections after cesarean delivery.

Methods: Women undergoing nonemergent cesarean birth at greater than 37 0/7 weeks of gestation were randomly allocated to one of three antiseptic skin preparations: povidone-iodine with alcohol, chlorhexidine with alcohol, or the sequential combination of both solutions. The primary outcome was surgical site infection reported within the first 30 days postpartum. Based on a surgical site infection rate of 12%, an anticipated 50% reduction for the combination group relative to either single skin preparation group, with a power of 0.90 and an α of 0.05, 430 women per group were needed to detect a difference.

Results: From January 2013 to July 2014, 1,404 women were randomly assigned to one of three groups: povidone-iodine with alcohol (n=463), chlorhexidine with alcohol (n=474), or both (n=467). The groups were similar with respect to demographics, medical disorders, indication for cesarean delivery, operative time, and blood loss. The overall rate of surgical site infection-4.3%-was lower than anticipated. The skin preparation groups had similar surgical site infection rates: povidone-iodine 4.6%, chlorhexidine with alcohol 4.5%, and sequential 3.9% (P=.85).

Conclusion: The skin preparation techniques resulted in similar rates of surgical site infections. Our study provides no support for any particular method of skin preparation before cesarean delivery.

Clinical trial registration: ClinicalTrials.gov, www.clinicaltrials.gov, NCT01870583.

Level of evidence: I.

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References

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