口服塞法莱克辛人口药理动力学和婴儿7至60天龄目标实现分析
Andrew S Haynes1,2, Zixuan Wei3, Marc H Scheetz4
1Children's Hospital Colorado, Department of Pediatrics, Section of Pediatric Infectious Diseases, Aurora, CO, United States.
Journal of the Pediatric Infectious Diseases Society
|September 25, 2025
概括
在7至60天的婴儿中,口服塞法莱克辛的剂量可以达到治疗目标. 基于模型的策略支持安全有效的抗生素使用,有助于新生儿感染的静脉注射到口服的过渡.
科学领域:
- 药理学 药理学是指药理学的学科.
- 新生儿医学 新生儿医学
- 传染性疾病 传染性疾病
背景情况:
- 对于新生儿和幼儿的口服抗生素剂量存在有限的数据,特别是对于IV到口服的过渡.
- 塞法列辛对新生儿病原体如肠杆菌和甲素敏感黄金葡萄球菌 (MSSA) 有希望.
- 婴儿的成熟影响药物吸收和功能,使标准剂量推断复杂化.
研究的目的:
- 为了评估0-60天大的婴儿中塞法列辛的药理动力学.
- 模拟剂量策略,以实现药理动力学目标.
- 为了优化早期婴儿期的塞法莱克辛使用.
主要方法:
- 对接受塞法列克辛的0-60天龄婴儿进行前性研究.
- 血度的非线性混合效应建模.
- 模拟以评估实现目标的概率 (MIC以上的空时间) 和累积分数反应.
主要成果:
- 体重,产后年龄和月经后年龄影响了塞法莱克辛的药理动力学.
- 25 mg/kg/剂量每6小时实现>90%的CFR对于50%的fT>MIC.
- 每8小时服用25毫克/千克/剂量对于MSSA在50%的fT>MIC时就足够了;更高的目标需要更频繁的剂量.
结论:
- 口服塞法列辛可以在7至60天的婴儿中实现必要的药学动力学目标.
- 支持基于模型的剂量策略,以确保安全有效的口服抗生素使用.
- 这些发现有助于指导新生儿感染的IV-to-oral过渡.
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