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Effect of Long-term Storage on Sterile Status of Devices in Surgical Packs

Published online by Cambridge University Press:  02 January 2015

N. Ariene Klapes*
Affiliation:
University of Minnesota, Minneapolis Saint Marys Hospital, Rochester, Minnesota
Velvl W. Greene
Affiliation:
University of Minnesota, Minneapolis Saint Marys Hospital, Rochester, Minnesota
Ann C. Langholz
Affiliation:
University of Minnesota, Minneapolis Saint Marys Hospital, Rochester, Minnesota
Cindy Hunstiger
Affiliation:
University of Minnesota, Minneapolis Saint Marys Hospital, Rochester, Minnesota
*
Univetsity of Minnesota, Division of Environmental and Occupational Health, Mayo Box 197, 420 Delaware Street SE, Minneapolis, MN 55455

Abstract

We investigated the effect of the following on the sterile integrity of surgical packs: four wrapping materials (two-ply reusable, nonbarrier wovens, both new and previously used; disposable, barrier nonwovens; and polypropylene peel pouches), dustcovers, two storage locations, and storage times ranging from 2 to 50 weeks. Two hundred sixty-three packs containing stainless steel coupons were prepared, wrapped, sterilized, and stored. Half of the packs were dustcovered prior to storage. At monthly intervals for a year, packs of each type were opened in a laminar flow hood, and the coupons inoculated into trypticase soy broth. The coupon contamination probabilities were 0.019 for reusable, woven packs; 0.017 for disposable, nonwoven packs; and 0.016 for peel pouches. These differences were not significant. The probability of finding a contaminated coupon in any pack after 50 weeks was 0.018. No trend toward increased probability of contamination over time was observed for any of the pack types studied.

Type
Original Articles
Copyright
Copyright © The Society for Healthcare Epidemiology of America 1987

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