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; " align="left">methicillin-resistant Staphylococcus aureus; risk factors; intensive care unitObjective : To study the incidence rate and risk factors of infection caused by methicillin-resistant staphylococcus aureus (MRSA) in the intensive care unit so as to provide scientific data for measures to prevent and control MRSA infections. Methods: Form Jan 1,2012 to Dec 31,2013,the patients with MRSA infections in general intensive care unit were selected as the case group while the patients without MRSA infections in general ICU were set as the control group;by means of epidemiological survey,the variables and risk factors were determined according to the review,consultant to advice by experts and work experience. Non-conditional logistic regression analysis model was used for single factor and multi-factor analysis to acquire independent risk factors of MRSA infections in ICU. Results:The results showed that the incidence rate was 62.79%.Among them,the incidence rate in 2012 was 68.18%,while the incidence rate in 2013 was 57.14%.The lower respiratory tract was the major part in MRSA infection. Logistic regression analysis showed that age(OR= 1.047,95% CI:1.009~1.086), length of ICU stay(OR= 1.050,95%CI:1.012~1.089), steroid administration(OR= 2.853,95%CI:1.177~6.911),mechanical ventilation(MV)(OR= 4.918,95%CI:1.175~20.583) and duration of drug therapy longer than 7 days (OR= 3.257,95%CI:1.055~10.058) were the independent risk factors.Conclusion: Age, length of ICU stay , use of hormones , mechanical ventilation and long-term use of antimicrobial agents are the risk factors for the bacterial infection in ICU.
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