Optimizing Vancomycin Area under the Concentration-Time Curve Targets in Enterococcal Bacteremia: Balancing Efficacy and Nephrotoxicity.

IF 2.8 4区 医学 Q1 MEDICINE, GENERAL & INTERNAL
Young Rong Kim, Ha-Jin Chun, Jung Yeon Heo, Hakjun Hyun, Young Hwa Choi, Eun Jin Kim
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引用次数: 0

Abstract

Purpose: Vancomycin is critical in treating enterococcal bacteremia; however, its optimal pharmacokinetic (PK)/pharmacodynamics (PD) targets remain unclear. This study evaluates the association between vancomycin PK/PD parameters and clinical outcomes in patients with enterococcal bacteremia.

Materials and methods: This retrospective cohort study included 70 patients with enterococcal bacteremia treated with vancomycin at a university-affiliated teaching hospital. The primary and secondary outcomes were unfavorable clinical outcome (30-day mortality or persistent bacteremia) and nephrotoxicity, respectively. Vancomycin area under the concentration-time curve (AUC)/minimal inhibitory concentration (MIC) was calculated using Bayesian methods. Receiver operating curve (ROC) analysis determined AUC/MIC thresholds for predicting unfavorable clinical outcomes and nephrotoxicity. Logistic regression analysis identified risk factors for clinical outcomes.

Results: Unfavorable outcome occurred in 21 patients (30.0%), and 10 (14.3%) experienced nephrotoxicity. The ROC-derived AUC₂₄/MIC cutoff for unfavorable outcome and nephrotoxicity were AUC₂₄/MIC ≥466.0 [AUC=0.740; 95% confidence interval (CI), 0.618-0.862] and ≥643.2 (AUC=0.963; 95% CI, 0.922-1.000), respectively. Clinical success was achieved in 44.9% (22/49) of patients with an AUC₂₄/MIC <400, whereas 47.6% (10/21) experienced unfavorable outcome despite having an AUC₂₄/MIC of 400-600. Nephrotoxicity [adjusted odds ratio (aOR)=15.05; 95% CI, 2.15-105.14; p=0.006] and Charlson Comorbidity Index (CCI) (aOR=1.57; 95% CI, 1.18-2.08; p=0.002) were independent risk factors for unfavorable outcome. High AUC₂₄/MIC and CCI were associated with nephrotoxicity (aOR=1.03; 95% CI, 1.01-1.04; p=0.005, and aOR=1.83; 95% CI, 1.01-3.35; p=0.045).

Conclusion: Nephrotoxicity and multiple comorbidities were stronger risk factors for unfavorable outcomes than vancomycin AUC/MIC. These findings highlight the need for individualized strategies to optimize efficacy while minimizing toxicity. Further large-scale studies are warranted to refine the optimal AUC/MIC threshold.

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在肠球菌菌血症浓度-时间曲线目标下优化万古霉素面积:平衡疗效和肾毒性。
目的:万古霉素是治疗肠球菌菌血症的关键;然而,其最佳药代动力学(PK)/药效学(PD)靶点仍不清楚。本研究评估万古霉素PK/PD参数与肠球菌菌血症患者临床结局之间的关系。材料和方法:本回顾性队列研究纳入了在某大学附属教学医院接受万古霉素治疗的70例肠球菌菌血症患者。主要和次要结果分别为不利的临床结果(30天死亡率或持续性菌血症)和肾毒性。采用贝叶斯方法计算万古霉素浓度-时间曲线下面积(AUC)/最小抑制浓度(MIC)。受试者工作曲线(ROC)分析确定了预测不良临床结局和肾毒性的AUC/MIC阈值。Logistic回归分析确定了影响临床结果的危险因素。结果:21例(30.0%)出现不良结局,10例(14.3%)出现肾毒性。roc衍生的不良预后和肾毒性的AUC₂₄/MIC临界值为AUC₂₄/MIC≥466.0 [AUC=0.740;95%可信区间(CI), 0.618-0.862]和≥643.2 (AUC=0.963; 95% CI, 0.922-1.000)。44.9%(22/49)的患者临床成功(AUC₂₄/MIC p=0.006), Charlson合并症指数(CCI) (aOR=1.57; 95% CI, 1.18-2.08; p=0.002)是不良结局的独立危险因素。高AUC₂₄/MIC和CCI与肾毒性相关(aOR=1.03; 95% CI, 1.01-1.04; p=0.005, aOR=1.83; 95% CI, 1.01-3.35; p=0.045)。结论:肾毒性和多重合并症是比万古霉素AUC/MIC更大的不良预后危险因素。这些发现强调了个性化策略的必要性,以优化疗效,同时尽量减少毒性。需要进一步的大规模研究来完善最佳AUC/MIC阈值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Yonsei Medical Journal
Yonsei Medical Journal 医学-医学:内科
CiteScore
4.50
自引率
0.00%
发文量
167
审稿时长
3 months
期刊介绍: The goal of the Yonsei Medical Journal (YMJ) is to publish high quality manuscripts dedicated to clinical or basic research. Any authors affiliated with an accredited biomedical institution may submit manuscripts of original articles, review articles, case reports, brief communications, and letters to the Editor.
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