在儿科手术中使用米达佐拉姆的药理动力学-药理动力学模型
Carmen Flores-Pérez1, Luis Alfonso Moreno-Rocha2, Juan Luis Chávez-Pacheco1
1Pharmacology Laboratory, National Institute of Pediatrics, Mexico City 04530, Mexico.
Pharmaceutics
|November 25, 2023
概括
儿童的米达佐拉姆 (MDZ) 镇静可能需要比通常使用的剂量更低. 这项研究发现,在一半标准剂量下,足够的镇静作用没有不良影响,这表明了优化儿科剂量的潜力.
科学领域:
- 药理学 药理学是指药理学的学科.
- 儿科麻醉学 儿科麻醉学
- 制药指标 (Pharmacometrics) 是一个指标.
背景情况:
- 米达佐拉姆 (MDZ) 是儿科手术中常用的镇静剂.
- 它的临床疗效取决于剂量和受体亲和力.
- 优化儿科镇静需要了解其药理动力学-药理动力学 (PK-PD) 概况.
研究的目的:
- 在接受小手术的儿科患者中开发MDZ的人口PK-PD模型.
- 评估MDZ度,镇静水平 (BIS) 和不良影响之间的关系.
- 为了确定儿科镇静的潜在剂量优化策略.
主要方法:
- 一项前性观察性研究包括接受IVMDZ (0.05毫克/公斤) 的儿科患者 (2-17岁,ASA I/II).
- 采集血液样本进行MDZ度分析 (5-120分钟).
- 使用双光谱指数尺度 (BIS) 监测镇静;使用非线性混合效应 (Monolix SuiteTM) 进行PK-PD建模.
主要成果:
- 建立了一个双分区,第一阶段消除PK-PD模型.
- 度-BIS关系呈现时针方向歇斯底里,表明依赖时间的蛋白质结合.
- 经过一半的MDZ剂量,观察到没有副作用的充分镇静作用.
结论:
- 开发的PK-PD模型为儿童患者的MDZ行为提供了洞察力.
- 较低的MDZ剂量可以实现有效的镇静,并减少不良事件.
- 需要进一步的研究来完善儿科MDZ剂量方案,并防止过度/不足镇静.
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