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Korean J healthc assoc Infect Control Prev 2014; 19(2): 37-44

Published online December 31, 2014 https://doi.org/10.14192/kjnic.2014.19.2.37

Copyright © Korean Society for Healthcare-associated infection Control and Prevention

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The Rate of Nasal Colonization of Methicillin-resistant Staphylococcus aureus at Admission to Intensive Care Units in a Secondary Hospital: The Importance of Nasogastric Tube

Eun-seo Lee1, Hae-jin Yang1, Yu Mi Wi1, Su Jin Jin2, Kyung Hwa Seo2, Jeong Hyun Kim3, Yun Jae Kwon1, Jin Dong Kim1, You Suk Kim1, You Jung Lee1

Departments of Internal Medicine1, Infection Control2, Laboratory Medicine3, Samsung Changwon Hospital, Changwon, Korea

Received: September 2, 2014; Revised: November 8, 2014; Accepted: November 20, 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: Methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization has been known as a predictor of intensive care unit (ICU)-acquired MRSA infections. We performed this study to survey the nasal colonization of MRSA among the patients admitted to an ICU and analyze risk factors associated with the colonization.Methods: A retrospective 1:1 matched case-control study was conducted with patients admitted to the ICU from March to December 2010 at Samsung Changwon Hospital.Results: A total of 602 patients among 846 patients admitted to the ICU during the study period were evaluated. The prevalence of nasal MRSA colonization was 67 (11.1%) of 602. Other factors, including underlying renal disease (odds ratio [OR]=12.37, 95% confidence interval [CI] 3.60-42.54; P<0.001), MRSA infection within the previous 3 months (OR=7.43, 95% CI 1.31-42.05; P=0.023), nursing home resident within the previous 1 month (OR=6.25, 95% CI 1.82-21.53; P=0.004), surgical procedure within the previous 1 month (OR=5.93, 95% CI 1.86-18.85; P=0.003), and current use of nasogastric tube (OR=4.98, 95% CI 1.84-13.45; P=0.002) were independently associated with nasal MRSA colonization in patients admitted to ICU.Conclusion: A significant number of patients admitted to the ICU in a secondary hospital were colonized with MRSA. The present study showed the possible impact of the presence of a nasogastric tube on the nasal colonization by MRSA. More effective infection control procedures must be developed for patients with nasogastric tube use.

Keywords: ICU, MRSA, Nasal colonization, Nasogastric tube

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