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Isolation of Acinetobacter baumannii Complex and Methicillin-Resistant Staphylococcus aureus from Hospital Rooms Following Terminal Cleaning and Disinfection: Can We Do Better?

Published online by Cambridge University Press:  02 January 2015

Farrin A. Manian ,
Sandra Griesenauer ,
Diane Senkel ,
Janice M. Setzer ,
Sara A. Doll ,
Annie M. Perry  and
Michelle Wiechens
Farrin A. Manian*
Affiliation:
Division of Infectious Diseases, St. John's Mercy Medical Center, St. Louis, Missouri Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Sandra Griesenauer
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Diane Senkel
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Janice M. Setzer
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Sara A. Doll
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Annie M. Perry
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
Michelle Wiechens
Affiliation:
Department of Infection Control, St. John's Mercy Medical Center, St. Louis, Missouri
*
St. John's Mercy Medical Center, 621 South New Ballas Road, 7018B, St. Louis, Missouri 63141 (farrinman@gmail.com)
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Abstract

Objective.

To study the frequency of isolation of Acinetobacter baumannii complex (ABC) and methicillin-resistant Staphylococcus aureus (MRSA) from surfaces of rooms newly vacated by patients with multidrug-resistant (MDR) ABC following various rounds of routine terminal cleaning and disinfection (C/D) with bleach or 1 round of C/D followed by hydrogen peroxide vapor (HPV) treatment.

Setting.

A 900-bed tertiary care hospital.

Methods.

ABC and MRSA cultures were obtained from hospital rooms including 312 rooms (mean, 18.3 sites/room) following 4 rounds of C/D, 37 rooms (mean, 20 sites/room) following 1 round of C/D before and after HPV treatment, and 134 rooms (mean, 20 sites/room) following 1 round of C/D and HPV treatment.

Results.

Following 4 rounds of C/D, 83 (26.6%) rooms had 1 or more culture-positive sites; 102 (1.8%) sites in 51 (16.4%) rooms grew ABC, and 108 (1.9%) sites in 44 (14.1%) rooms grew MRSA. The addition of HPV treatment to 1 round of C/D resulted in a significant drop in ABC- and MRSA-positive room sites (odds ratio, 0 [95% confidence interval, 0–0.8]; P = .04 for both organisms). Following 1 round of C/D and HPV treatment, 6 (4.5%) rooms were culture-positive for ABC, MRSA, or both.

Conclusions.

Routine terminal C/D of hospital rooms vacated by MDRABC-positive patients may be associated with a significant number of ABC- or MRSA-positive room surfaces even when up to 4 rounds of C/D are performed. The addition of HPV treatment to 1 round of C/D appears effective in reducing the number of persistently contaminated room sites in this setting.

Type
Original Articles
Information
Infection Control & Hospital Epidemiology , Volume 32 , Issue 7 , July 2011 , pp. 667 - 672
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2011

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