从药理动力学到精确剂量:优化对老年患者西普罗的持续输液方案
Jiaxi Zhu1,2, Jing He1,2, Bowen Zhong1,2
1Department of Anesthesiology, General Hospital of Southern Theater Command of PLA, Guangzhou, Guangdong, China.
Frontiers in pharmacology
|February 18, 2026
概括
在老年手术患者中开发了一个新的人口药理动力学/药理动力学 (PK/PD) 模型. 这种模型可以实现精确的剂量,以达到目标麻醉深度,改善患者的治疗结果.
科学领域:
- 药理学 药理学是指药理学的学科.
- 麻醉学 麻醉学
- 临床药房 临床药房
背景情况:
- 老年手术患者需要仔细的麻醉管理.
- 西普罗是一种麻醉剂,老年患者的剂量需要优化.
- 种群药理动力学/药理动力学 (PK/PD) 建模是指导药物剂量的宝贵工具.
研究的目的:
- 开发和验证老年手术患者中西普罗的种群PK/PD模型.
- 为了描述西普罗的药理动力学特征和度-效果关系.
- 在这个人口群体中为西普罗准确剂量策略提供信息.
主要方法:
- 使用非线性混合效应建模进行的人口PK/PD分析,对来自20名老年手术患者的动脉血液样本和双光谱指数 (BIS) 数据进行分析.
- 一个三隔间模型描述了西普罗的药理动力学,一个西格形的Emax模型描述了药理动力学 (BIS).
- 评估了共变量,并使用适合性图表,引导分析和预测纠正的视觉预测检查验证了模型性能. 通过蒙特卡洛模拟优化了剂量方案.
主要成果:
- 一个三部分模型充分描述了西普罗PK,体重和年龄显著影响了清除.
- 药理动力学分析显示了快速的效果部位平衡 (Ke0: 1.09 min-1),EC50为233.91 ng mL-1,Hill系数为3.00.
- 模拟表明,静脉注射0.4毫克/公斤的加重剂量-1,然后连续输注0.6毫克/公斤-1·h-1可以保持BIS值在40-60之间.
结论:
- 在老年手术患者中成功建立了一个强大的和经过验证的人口PK/PD模型.
- 该模型为优化老年患者西普罗剂量提供了基础.
- 这种方法支持个性化剂量,以达到目标麻醉深度,可能提高手术结果.
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