• J. Am. Coll. Surg. · Nov 2016

    Randomized Controlled Trial

    Impact of Hair Removal on Surgical Site Infection Rates: A Prospective Randomized Noninferiority Trial.

    • Todd J Kowalski, Shanu N Kothari, Michelle A Mathiason, and Andrew J Borgert.
    • Infectious Disease Section, Department of Internal Medicine, Gundersen Health System, La Crosse, WI. Electronic address: tjkowals@gundersenhealth.org.
    • J. Am. Coll. Surg. 2016 Nov 1; 223 (5): 704-711.

    BackgroundDespite substantial prevention efforts, surgical site infections (SSIs) remain the most common health care-associated infection. It is unclear whether the Centers for Disease Control and Prevention recommendation to leave hair intact preoperatively reduces SSIs.Study DesignA single-center, prospective, randomized, clinical trial was conducted from October 2009 to February 2015 in a 325-bed multispecialty, tertiary care teaching hospital to test the noninferiority of clipping hair to no hair removal in the prevention of SSIs. A total of 4,908 adults scheduled for elective general surgical procedures were screened for study participation. Of these, 600 were approached but refused, and 2,630 were excluded. Patients were randomized 1:1 to either the clipped group (n = 834) or the not-clipped group (n = 844). The clipped group had hair at the surgical site removed using disposable electric clippers. Of the randomized patients, 1,543 (768 in the clipped group and 775 in the not-clipped group) completed follow-up. The primary endpoint was the proportion of patients who could be evaluated and who had no SSI, as defined by CDC criteria.ResultsBaseline demographic, clinical, and surgical characteristics were similar between groups. The overall rate of SSI in the per-protocol analysis was 6.12% (47 of 768) in the clipped group and 6.32% (49 of 775) in the not-clipped group (absolute risk difference -0.20%; 95% CI -2.61% to 2.21%), p = 0.037). Because the absolute risk difference confidence interval included the prespecified noninferiority margin of 2%, we were unable to definitively demonstrate noninferiority for clipping hair.ConclusionsSurgical site infection rates were similar whether hair was clipped or not in patients undergoing general surgical procedures.Copyright © 2016 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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