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Chest. 2006 Oct;130(4):947-55.

Predictors of mortality for methicillin-resistant Staphylococcus aureus health-care-associated pneumonia: specific evaluation of vancomycin pharmacokinetic indices.

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1
Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, MO, USA.

Abstract

OBJECTIVE:

The goal of this investigation was to determine whether vancomycin pharmacokinetic indexes (eg, serum trough concentrations or area under the concentration curve [AUC] values) were associated with mortality for patients with health-care-associated pneumonia (HCAP) attributed to methicillin-resistant Staphylococcus aureus (MRSA).

DESIGN:

A retrospective, single-center, observational cohort study.

SETTING:

Barnes-Jewish Hospital, a 1,200-bed urban teaching facility.

PATIENTS:

Adult patients requiring hospitalization who were identified as having HCAP attributed to MRSA by BAL semi-quantitative cultures.

INTERVENTIONS:

Retrospective data collection from automated hospital, microbiology, and pharmacy databases.

MEASUREMENTS AND MAIN RESULTS:

One hundred two patients with MRSA HCAP were identified over a 6.5-year period. Thirty-two patients (31.4%) died during their hospitalization. The mean (+/- SD) vancomycin trough concentrations (13.6 +/- 5.9 vs 13.9 +/- 6.7 microg/mL, respectively; p = 0.866) and AUC values (351 +/- 143 vs 354 +/- 109 microg/h/mL, respectively; p = 0.941) did not differ between survivors and nonsurvivors. The stratification of the vancomycin trough concentrations and AUC values yielded no relationship with hospital mortality.

CONCLUSIONS:

We found no evidence that greater vancomycin trough concentrations or AUC values correlated with hospital outcome. Based on these results, aggressive dosing strategies for vancomycin (eg, trough concentrations of > 15 microg/mL) may not offer any advantage over traditional dose targets (range, 5 to 15 microg/mL).

PMID:
17035423
DOI:
10.1378/chest.130.4.947
[Indexed for MEDLINE]
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