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相关概念视频

Drug Accumulation During Multiple Dosing: Intermittent IV Infusions01:24

Drug Accumulation During Multiple Dosing: Intermittent IV Infusions

Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
Estimation of k and VD of Aminoglycosides01:20

Estimation of k and VD of Aminoglycosides

Aminoglycosides are a class of antibiotics used to treat various bacterial infections. Clinicians must determine the elimination rate constant (k) and volume of distribution (VD) to optimize therapeutic efficacy and minimize toxicity. The k value represents the rate at which the drug is removed from the body, and the VD reflects the degree to which the drug distributes into body tissues. Accurately estimating these parameters allows healthcare professionals to tailor drug dosing to individual...
Therapeutic Drug Monitoring: Drug Analysis Methods01:26

Therapeutic Drug Monitoring: Drug Analysis Methods

Therapeutic Drug Monitoring (TDM) is a clinical practice that measures specific drug levels in a patient's blood or body tissues to tailor drug therapy effectively. This monitoring is critical for managing drugs with narrow therapeutic indices like digoxin and phenytoin, ensuring they are both safe and effective. For instance, monitoring theophylline levels in asthma patients involves precision and sensitivity to adjust doses according to individual responses to therapy, ensuring efficacy and...

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Updated: Jul 17, 2026

Sample Extraction and Simultaneous Chromatographic Quantitation of Doxorubicin and Mitomycin C Following Drug Combination Delivery in Nanoparticles to Tumor-bearing Mice
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使用有限采样策略预测达普托米辛暴露量.

Simona De Gregori1, Elena Seminari2, Mara Capone1

  • 1Department of Diagnostic Medicine and Services: Laboratory Medicine-Clinical and Experimental Pharmacokinetics Unit, Fondazione IRCCS Policlinico, San Matteo, Pavia, Italy.

Therapeutic drug monitoring
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概括

一种新方法估计了使用仅两个血液样本的达普托米辛暴露 (AUC 0-24). 这种有限的抽样策略有助于量身定制抗生素剂量,以更好地治疗黄金葡萄球菌感染.

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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
  • 临床药理学 临床药理学

背景情况:

  • 达普托米辛是一种脂抗生素,用于治疗严重的金黄色葡萄球菌感染,如内心炎.
  • 治疗疗效与度-时间曲线下的面积 (AUC 0-24) 与最小抑制度的比率有关.
  • 准确的AUC 0-24估计对于优化达普素治疗至关重要.

研究的目的:

  • 开发一种有限的抽样策略,以估计度-时间曲线下达普托米辛的24小时面积 (AUC 0-24).
  • 为了简化在临床环境中监测达普托的药理动力学.
  • 根据估计的药物暴露来实现个性化剂量方案.

主要方法:

  • 从50名接受至少5天治疗的患者中计算了68个达普托米辛AUC0-24值.
  • 使用高性能液体染色学-并联质谱仪进行血度分析.
  • 使用多重回归分析与两个度-时间点来预测AUC 0-24,评估预测偏差和精度.

主要成果:

  • 剂后2小时达普托米辛的最低度和血水平有效估计AUC为0-24.
  • 实现了平均预测误差为1.6和平均绝对预测误差为11.8%.
  • 73%的预测错误在临床上可接受的±15%范围内.

结论:

  • 一个经过验证的方程允许使用有限的采样准确估计达普托AUC 0-24.
  • 这一策略提高了个性化达普托米辛剂量的临床实用性.
  • 对于治疗失败或反应延迟的高风险患者有好处.