多剂量达尔巴万辛在需要长期治疗的患者中长期实现目标的群体药理动力学分析
Giammarco Baiardi1, Michela Cameran Caviglia1, Silvia Boni2
1Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy.
Antibiotics (Basel, Switzerland)
|February 26, 2025
概括
两次1500毫克的达尔巴万辛 (DAL) 剂量分隔7天,为格拉姆阳性感染提供了一种有效的策略. 这种剂量方案确保了长时间的最佳药物暴露,指导长期治疗决策.
科学领域:
- 药理动力学和药理动力学
- 传染性疾病 传染性疾病
- 抗菌疗法是一种抗菌疗法.
背景情况:
- 达尔巴万辛 (DAL) 是一种对抗格拉姆阳性细菌有效的脂糖,包括多药耐药菌株.
- 证据支持DAL在挑战性感染中的有效性,观察到依赖时间的杀菌活性.
- 实现药理动力学/药理动力学 (PK/PD) 目标的最佳多剂量疗法尚未完全确定.
研究的目的:
- 为了确定最佳的多剂量达尔巴万辛 (DAL) 治疗方案.
- 为了实现90%的目标实现概率 (PTA) 达到100%的无药时间,超过4倍的最小抑制度 (MIC).
- 使用蒙特卡洛模拟来模拟DAL等离子体配置.
主要方法:
- 非线性混合效应建模 (NONMEM v7.5) 用于药理动力学分析.
- 使用R.进行的数据管理和图形总结.
- 蒙特卡洛模拟用于评估各种多剂量DAL疗法.
主要成果:
- 一个具有全米体重缩放的两部分模型最好地描述了DAL处置 (CLcr > 30mL/min).
- 两次1500毫克DAL剂量,隔7天,达到>90%的PTA100%的FT>4xMIC长达3-5周根据体重.
- 额外的第三剂量将最佳PTA延长到6-9周,这取决于患者的体重.
结论:
- 两次1500毫克的DAL剂量隔7天服用,对于CLcr>30毫升/分钟的患者来说,这是一个可行的初始策略.
- 对于延长治疗时间,额外的DAL剂量应以治疗药物监测 (TDM) 或经验性基于体重的剂量为指导.
- 这项研究为优化Dalbavancin在复杂格兰氏阳性感染中的剂量提供了宝贵的见解.
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