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Am J Infect Control. 2010 Apr;38(3):212-6. doi: 10.1016/j.ajic.2009.07.010. Epub 2009 Nov 8.

Antibiotic consumption as a driver for resistance in Staphylococcus aureus and Escherichia coli within a developing region.

Author information

1
Infection Control Unit, Mater Dei Hospital, Msida, Malta. michael.a.borg@gov.mt

Abstract

BACKGROUND:

This study aimed to provide insight into possible antibiotic drivers of methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli resistant to third-generation cephalosporins (3GCREC) in southern and eastern Mediterranean institutions.

METHODS:

MRSA and 3GCREC susceptibility proportions from 19 regional hospitals, previously published by the ARMed project, were correlated with antibiotic use data from the same institutions.

RESULTS:

Hospitals reporting below-median MRSA proportions had significantly lower total antibiotic use. MRSA proportions increased with greater use of carbapenems (P=.04). In multivariate analysis, a positive correlation was identified with the use of carbapenems (P=.002), combination penicillins (P=.018), and aminoglycosides (P=.014). No difference was ascertained between 3GCREC proportions and total antibiotic use. In multivariate linear regression, a correlation was identified only for 3GCREC (P=.005), but a negative association was evident for beta-lactamase-resistant penicillins (P=.010) and first-generation cephalosporins (P=.012).

CONCLUSIONS:

The results suggest an association between resistance and antibiotic use, especially for carbapenems and third-generation cephalosporins. These data support the urgent implementation of antibiotic stewardship initiatives in hospitals in developing countries that focus on more judicious use of broad-spectrum formulations.

PMID:
19900738
DOI:
10.1016/j.ajic.2009.07.010
[Indexed for MEDLINE]

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