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BMJ. 2006 Aug 5;333(7562):281. Epub 2006 Jun 23.

Mortality after Staphylococcus aureus bacteraemia in two hospitals in Oxfordshire, 1997-2003: cohort study.

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  • 1Nuffield Department of Clinical Laboratory Sciences, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU. david.wyllie@ndcls.ox.ac.uk

Erratum in

  • BMJ. 2006 Sep 2;333(7566):468.

Abstract

OBJECTIVE:

To determine the incidence of methicillin resistant and methicillin sensitive Staphylococcus aureus (MRSA and MSSA) bacteraemia in inpatients and associated mortality within 30 days after diagnosis.

DESIGN:

Anonymised record linkage study of data from hospital information systems and microbiology databases.

SETTING:

Teaching hospital and district general hospital in Oxfordshire.

PARTICIPANTS:

Inpatients aged 18 or over admitted to a teaching hospital between 1 April 1997 and 31 March 2004 and to a district general hospital between 1 April 1999 and 31 March 2004. The main part of the study comprised 216 644 inpatients; patients admitted to haematology, nephrology, or oncology services were not included because most were managed as outpatients.

OUTCOME MEASURES:

Nosocomial MSSA and MRSA bacteraemia; death in hospital within 30 days after bacteraemia.

RESULTS:

Rates of S aureus bacteraemia rose between 1997 and 2003, and MRSA was responsible for this increase. Overall mortality 30 days after bacteraemia was 29%. The crude odds ratio for death after MRSA bacteraemia compared with MSSA bacteraemia was 1.49 (95% confidence interval 0.99 to 2.26).

CONCLUSION:

The spread of MRSA has greatly increased the overall number of cases of S aureus bacteraemia and has contributed to short term mortality after S aureus bacteraemia.

Comment in

PMID:
16798756
[PubMed - indexed for MEDLINE]
PMCID:
PMC1526943
Free PMC Article

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