在新生儿中确定万科米辛暴露目标:有多少足够?
Yuan Gao1, Tong Wu1, Libin Pu1
1School of Pharmacy, Lanzhou University, Lanzhou, Gansu Province, China.
The Journal of antimicrobial chemotherapy
|October 25, 2024
概括
在新生儿中,万科米辛的有效性最好通过AUC0-24h/MIC ≥331来预测,而不是最低度. 推以AUC为指导的剂量,以获得更好的临床结果,新生儿接受vancomycin.
科学领域:
- 新生儿药理学 新生儿药理学
- 传染病药物疗法 传染病药物治疗
- 药理动力学/药理动力学 (PK/PD) 建模
背景情况:
- 范科米辛经常给新生儿使用成年PK/PD点.
- 支持这种做法的证据有限,而低谷度对预测结果的可靠性是可疑的.
- 对新生儿的最佳万科米辛剂量策略需要进一步研究.
研究的目的:
- 确定最佳的PK/PD预测器,以确定万科米辛在新生儿中的有效性.
- 评估AUC/MIC,低谷度和万科米辛有效性之间的相关性.
- 为了建立基于证据的剂量指导方针,用于新生儿万科米辛治疗.
主要方法:
- 人口药理动力学 (PPK) 建模用于估计131名新生儿的万科米辛AUC.
- 后勤回归确定了与治疗疗效相关的变量.
- 分类和回归树分析确定了最佳的PK/PD值.
- 线性回归分析了低谷度和AUC/MIC之间的相关性.
主要成果:
- 范科米辛疗效的最佳PK/PD目标被确定为AUC0-24h/MIC ≥331.
- 谷口度与AUC0-24h/MIC (r2 = 0.32) 呈现中度相关性,具有显著的个体变异性.
- 对于给定的最低度,AUC0-24h/MIC变化高达2.5倍,突显了其不可靠性.
结论:
- 建议AUC0-24h/MIC目标≥331以优化新生儿中的万科米辛疗效.
- 新生儿万科米辛的最低度不是有效性或AUC/MIC的可靠预测指标.
- 以AUC为指导的万科米辛剂量调整在临床上优于新生儿护理.
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