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Title: Clinical impact of methicillin resistance on outcome of patients with Staphylococcus aureus infection: A stratified analysis according to underlying diseases and sites of infection in a large prospective cohort
Authors: Cheol In Kang
Jae Hoon Song
Doo Ryeon Chung
Kyong Ran Peck
Kwan Soo Ko
Joon Sup Yeom
Shin Woo Kim
Hyun Ha Chang
Yeon Sook Kim
Sook In Jung
Jun Seong Son
Po Ren Hsueh
Thomas Man kit So
M. K. Lalitha
Yonghong Yang
Shao Guang Huang
Hui Wang
Quan Lu
Celia C. Carlos
Jennifer A. Perera
Cheng Hsun Chiu
Jien Wei Liu
Anan Chongthaleong
Visanu Thamlikitkul
Hung Van Pham
SungKyunKwan University, School of Medicine
Kyungpook National University Hospital
Chonnam National University
Chonnam National University, College of Medicine
Kyung Hee Medical Center
National Taiwan University Hospital
Princess Margaret Hospital Hong Kong
Christian Medical College, Vellore
Capital Medical University China
Shanghai Jiao Tong University School of Medicine
Peking Union Medical College
Shanghai Jiao Tong University
University of Colombo
Chang Gung University College of Medicine
Asia Pacific Foundation for Infectious Diseases (APFID)
Mahidol University
University of Medicine and Pharmacy
Madras Medical Mission
Keywords: Medicine
Issue Date: 1-Oct-2010
Citation: Journal of Infection. Vol.61, No.4 (2010), 299-306
Abstract: Objective: This study was conducted to identify the predictors of mortality and to evaluate the impact of methicillin resistance on outcome in patients with . Staphylococcus aureus infection according to underlying conditions and type of infection. Methods: An observational cohort study including 4949 patients with . S. aureus infection was conducted. We compared data from patients with MRSA infection with those with MSSA infection. Results: The 30-day mortality rate of MRSA group was significantly higher than that of MSSA group (15.6% vs. 6.2%, . P < 0.001). However, MRSA infection was not found to be independent risk factor for mortality after adjusting for other variables (OR = 1.03, 95% CI = 0.80-1.32). When we analyzed patients with . S. aureus bacteremia (n = 709), MRSA infection was found to be significantly associated with mortality in multivariate analysis (Adjusted OR = 1.69, 95% CI = 1.15-2.49). When the 30-day mortality rates were compared according to underlying diseases, the 30-day mortality rate of MRSA group was significantly higher than that of MSSA group in patients with malignancy or renal diseases. MRSA infection was also found to be one of the independent risk factors for mortality in patients with malignancy (adjusted OR = 1.69, 95% CI = 1.06-2.70) and in those with renal disease (adjusted OR = 1.70, 95% CI = 1.0-2.89), after adjustment for host variables. Conclusions: Methicillin resistance adversely affected the outcome of patients with . S. aureus infection, in patients with cancer or renal disease and in those with . S. aureus bacteremia, although MRSA infection was not found to be significantly associated with higher mortality in overall patient population. © 2010 The British Infection Society.
ISSN: 01634453
Appears in Collections:Scopus 2006-2010

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