在重症儿童中,塞夫塔齐的群体药理动力学和剂量优化
Mengting Li1, Liuliu Gao1, Zuo Wang2
1Department of Clinical Pharmacy, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
这项研究开发了一种对重症儿童的塞夫塔齐的种群药动力学模型. 优化剂量方案可确保对大多数感染的有效治疗,但对耐药细菌可能需要更高的剂量.
科学领域:
- 药理学 药理学是指药理学的学科.
- 儿科重症监护室的儿童重症监护室
- 临床药房 临床药房
背景情况:
- 塞夫塔胺是治疗重症儿童严重感染的关键抗生素.
- 在儿科重症监护室 (PICU) 患者中优化塞夫塔齐迪姆剂量是必不可少的,因为危急疾病中药理学发生了变化.
- 准确的剂量可以确保治疗效果,同时最大限度地降低毒性.
研究的目的:
- 开发一个人群的药理动力学 (PPK) 模型,用于重症儿童的塞夫塔齐迪姆.
- 为了优化这种脆弱患者群体的塞夫塔齐迪姆剂量方案.
- 建立基于证据的剂量建议,考虑到患者的体重和功能.
主要方法:
- 在88名重症儿童 (0.03-15岁) 中进行了前性药理动力学研究.
- 使用非线性混合效应 (NLME) 建模开发了一个单间线性模型.
- 使用蒙特卡洛模拟来确定最佳剂量,以达到70%的时间超过最小抑制度 (MIC).
主要成果:
- 体重和估计的膜过率 (eGFR) 是对塞夫塔齐清除的显著共变量.
- 开发的PPK模型准确地描述了重症儿童中塞夫塔齐迪姆的药理动力学.
- 推方案实现了>90%的目标实现概率 (PTA) 对于MIC高达8 mg/L.
结论:
- 在重症儿童中建立了一个强大的ceftazidime人口药理动力学模型.
- 建议基于体重和eGFR的个性化剂量建议.
- 目前的标准剂量对敏感病原体 (MIC ≤8 mg/L) 有效,但对于抗塞夫塔胺感染 (MIC = 16 mg/L) 可能需要更高的剂量.
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