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Title:	Effect of Daptomycin Dose on the Outcome of Vancomycin-Resistant, Daptomycin-Susceptible Enterococcus faecium Bacteremia
Authors:	Chuang, Yu-Chung;Lin, Hsin-Yi;Chen, Pao-Yu;Lin, Chi-Ying;Wang, Jann-Tay;Chen, Yee-Chun;Chang, Shan-Chwen Lin, Hsin-Yi
Contributors:	經濟學系
Keywords:	daptomycin;dose;mortality;vancomycin-resistant enterococci;bacteremia
Date:	2017-04
Issue Date:	2017-07-27 09:18:57 (UTC+8)
Abstract:	Background.: Treatment options for vancomycin-resistant enterococci (VRE) bloodstream infection (BSI) are limited. Daptomycin, although not currently approved for this indication, is frequently used for the treatment of VRE-BSI. Its optimal dose still needs to be determined.Methods.: We conducted a prospective, observational, cohort study during 2010-2015. We included patients who received a daptomycin dose of ≥6 mg/kg for the treatment of VRE-BSI caused by daptomycin-susceptible VRE. The primary endpoint was 14-day mortality, and multivariable logistic regression was performed for outcome analysis.Results.: We included 112 patients treated with daptomycin for VRE-BSI and with evaluable clinical outcomes. The daptomycin minimum inhibitory concentration (MIC) was 4 mg/L in 78 (69.6%) and ≤2 mg/L in 34 (30.4%) isolates. The overall mortality was 40/112 (35.7%). The unadjusted mortality was 18/36 (50.0%) for a daptomycin dose of <7 mg/kg, 17/51 (33.3%) for a dose of 7-9 mg/kg, and 5/25 (20%) for a dose of ≥9 mg/kg (P = .05). The best outcomes were associated with a daptomycin dose of ≥9 mg/kg compared to doses of <7 mg/kg (adjusted odds ratio [aOR], 10.57; 95% confidence interval [CI], 2.25-49.62; P=.003) and 7-9 mg/kg (aOR, 5.01; 95% CI, 1.14-21.98; P=.03). There was no significant difference in mortality with respect to the daptomycin MIC. There was no association between daptomycin dose and elevated creatinine kinase.Conclusion.: Higher daptomycin doses (≥9 mg/kg) were associated with lower mortality in patients with VRE-BSI. Our results suggest that higher daptomycin doses need to be considered for VRE-BSI treatment.
Relation:	Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 64(8), 1026-1034
Data Type:	article
DOI link:	http://dx.doi.org/10.1093/cid/cix024
DOI:	10.1093/cid/cix024
Appears in Collections:	[Department of Business Administation] Periodical Articles

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