Hospital policies and practices on prevention and treatment of infections caused by methicillin-resistant Staphylococcus aureus

June 2010
American Journal of Health-System Pharmacy;6/15/2010, Vol. 67 Issue 12, p1017
Academic Journal
Purpose. The use of policies and practices regarding surveillance, decolonization, and treatment of methicillin-resistant Staphylococcus aureus (MRSA) infections and the formulary status of various antimicrobial agents used to treat MRSA were characterized. Methods. A 61-item questionnaire was sent to the director of pharmacy at each of 263 acute care hospitals that were members of a national group purchasing organization. Results. Responses were received from 102 hospitals (38.8%). Active surveillance culture protocols were in place at 44 hospitals (44%). Nearly 75% engaged in key antimicrobial stewardship activities, while only 18% reported having a formal antimicro-bial stewardship team. MRSA decolonization policies existed in approximately 25% of the respondent hospitals. Vancomycin was on the formulary in all hospitals with few restriction policies, while the newer anti-MRSA agents—linezolid, daptomycin, and tigecycline—were on the formulary in most hospitals but with restrictions. Vancomycin was the most commonly used antimicrobial for the treatment of various MRSA infections, followed by linezolid. Nearly 70% of the respondent hospitals reported having a vancomycin-specific dosing or monitoring guideline in place. Most specified the use of actual body weight for dosing and trough serum concentrations at steady state for therapeutic monitoring (84% and 91%, respectively). Most guidelines did not address the use of a loading dose to attain a high target trough or methods for choosing alternative agents. Conclusion. Acute care hospitals in the United States varied in their policies and practices of surveillance, decolonization, and treatment of MRSA infections, but most were consistent with national guideline recommendations.


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