Risk factors for 30-day mortality in patients with methicillin-resistant Staphylococcus aureus bloodstream infections.
Ayau P, Bardossy AC, Sanchez G, Ortiz R, Moreno D, Hartman P, Rizvi K, Prentiss TC, Perri MB, Mahan M, Huang V, Reyes K, and Zervos MJ. Risk factors for 30-day mortality in patients with methicillin-resistant staphylococcus aureus bloodstream infections Int J Infect Dis 2017; 61:3-6.
Int J Infect Dis
OBJECTIVES: Methicillin-resistant Staphylococcus aureus (MRSA) blood stream infections (BSI) are a major health care problem accounting for a large percentage of nosocomial infections. The aim of this study was to identify risk factors associated with 30-day mortality in patients with MRSA BSI.
METHODS: This was a retrospective study performed in Southeast Michigan. Over a 9- year period, a total of 1,168 patients were identified with MRSA BSI. Patient demographics and clinical data were retrieved and evaluated using electronic medical health records.
RESULTS: 30-day mortality during the 9-year study period was 16%. Significant risk factors for 30-day mortality were age, cancer, heart disease, neurologic disease, nursing home residence and Charlson score >3 with Odds Ratio (OR) of 1.03 (CI 1.02-1.04), 2.29 (CI 1.40-3.75), 1.78 (CI 1.20-2.63), 1.65 (CI 1.08-2.25), 1.66 (CI 1.02 - 2.70) and 1.86 (CI 1.18 - 2.95) correspondingly. Diabetes mellitus, peripheral vascular disease (PVD), and readmission were protective factors for 30-day mortality with OR of 0.53 (CI 0.36-0.78), 0.46 (CI 0.26-0.84) and 0.13 (CI0.05 - 0.32) respectively.
CONCLUSIONS: Our study identified significant risk factors for 30-day mortality in patients with MRSA BSI. Interestingly, diabetes mellitus, PVD and readmission were protective effects on 30-day mortality. There was no statistically significant variability in 30-day mortality over the 9-year study period.
Medical Subject Headings
Aged; Bacteremia; Cause of Death; Cross Infection; Electronic Health Records; Female; Humans; Male; Methicillin Resistance; Methicillin-Resistant Staphylococcus aureus; Middle Aged; Retrospective Studies; Risk Factors; Staphylococcal Infections