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General Orthopaedics

PREVENTION OF MRSA (METHICILLIN RESISTANT STAPHYLOCOCCUS AUREUS) INFECTION AFTER PROSTHETIC JOINT SURGERY BY DEDICATING A WARD TO NON-MRSA COLONISED

British Orthopaedic Association (BOA) 2005



Abstract

From 1998 to July 2003 admissions for elective arthroplasty surgery in Derriford Hospital were nursed alongside other orthopaedic and general medical patients. Since August 2003 a policy of pre-operative MRSA screening and a unit reserved exclusively for MRSA-free joint replacement patients have been used. No transfers from other wards were allowed. Patients positive on screening underwent eradication and were admitted to a different ward where they received teicoplanin on induction (in addition to standard policy cephradine). All post-operative wound infections following THR & TKR were monitored (NINSS surveillance system). Infections within 3 months were recorded. A control of non-screened hip hemi-arthroplasty patients was used to ensure a departmental wide reduction in MRSA was not occurring.

1.9% MRSA carriage rate was detected over the study. Before screening, 0.59% of 3386 cases were acutely infected with MRSA. After institution of screening and a dedicated MRSA free unit, 0.10% of 1034 were acutely infected. This was a 6-fold decrease (p<0.05). The infection noted was in a patient treated outside the ringfenced unit on High Dependency. In fact the infection rate on the ringfenced unit was zero. MRSA infection in the control was statistically unchanged during this period.

Conclusion

A policy of MRSA screening and an MRSA free joint replacement ward reduces the incidence of acute MRSA infections.