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相关概念视频

One-Compartment Open Model for IV Bolus Administration: General Considerations01:19

One-Compartment Open Model for IV Bolus Administration: General Considerations

202
The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant,...
202
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

125
Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
125
One-Compartment Model: IV Infusion01:09

One-Compartment Model: IV Infusion

198
Intravenous (IV) infusion is often utilized when continuous and controlled drug delivery is necessary, such as during surgery or in the treatment of chronic diseases. This method offers numerous advantages, including immediate drug action, precise control over dosage, and bypassing the first-pass metabolism.
The one-compartment model for IV infusion uses mathematical equations to describe the rate of change in drug quantity in the body. At steady-state or infusion equilibrium, the drug input...
198
Compartment Models: Two-Compartment Model01:20

Compartment Models: Two-Compartment Model

5.5K
The two-compartment model divides the body into central and peripheral compartments to account for varying blood perfusion rates among organs and tissues, affecting drug distribution. The central compartment includes blood and highly perfused tissues with rapid drug distribution, while the peripheral compartment contains tissues with slower drug distribution. After a single IV bolus dose, the drug concentration is high in plasma and low in tissues. The drug distribution between compartments...
5.5K
Compartment Models: Single-Compartment Model01:14

Compartment Models: Single-Compartment Model

2.3K
The single-compartment model serves as a simplified representation of the human body. This model assumes that the body functions as a single, well-mixed open compartment. When a drug is administered intravenously, it enters the body and quickly distributes uniformly. The drug then undergoes biotransformation and elimination, ultimately leaving the body. The volume of this compartment is referred to as the apparent volume of distribution into which the drug can uniformly distribute. In this...
2.3K
Two-Compartment Open Model: IV Infusion01:15

Two-Compartment Open Model: IV Infusion

233
A two-compartment model is a vital tool in pharmacokinetics, providing an essential understanding of drug behavior, especially for those administered via zero-order intravenous infusion. This model outlines two compartments: the central compartment, where elimination occurs, and the peripheral compartment.
The model illustrates the decrease in plasma drug concentration from the central compartment with a specific equation. It shows that under steady-state conditions, the drug's input rate...
233

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相关实验视频

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Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea
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Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea

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使用沼泽模型,调整输入重量,进行通用目的普罗波的目标控制输注.

George Zhong1, Xiabing Xu2

  • 1Department of Anaesthesia, Concord Repatriation General Hospital, Hospital Road, Concord, NSW, 2139, Australia. drgzhong@gmail.com.

Journal of anesthesia
|February 11, 2024
PubMed
概括

一种新的重量调整方法增强了马什对普罗波的目标控制输注 (TCI) 模型. 这提高了老年和体重不足患者的精度,与Eleveld模型非常相匹配.

关键词:
埃尔维尔德地区 (Eleveld) 的一个地方.马尔什 Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh Marsh普罗波福尔 (Propofol) 是一种目标控制输注注射目标控制输注

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科学领域:

  • 麻醉学 麻醉学
  • 药理动力学 药理动力学
  • 医疗信息学 医疗信息学

背景情况:

  • 目标控制输注 (TCI) 模型对于精确的麻醉药物输送至关重要.
  • 马什TCI模型对于年龄和体重指数极端的患者的准确性有局限性.
  • 埃莱维尔德模型提供了更好的准确性,但尚未得到广泛实施.

研究的目的:

  • 开发和验证Marsh TCI模型的简单重量调整方法.
  • 提高马什模型的精度,特别是对于儿科和老年人群.
  • 为了使 Marsh 模型能够紧密模仿 Eleveld 模型的性能.

主要方法:

  • 一个新的重量调整算法被应用于马什TCI模型.
  • 模拟对2768个虚拟受试者进行了模拟,这些受试者具有不同的人口特征 (年龄,体重,身高,性别).
  • 根据重量调整的Marsh模型的性能与使用propofol TCI模拟的Eleveld模型进行了比较.

主要成果:

  • 经重量调整的马什模型显示了输液方案和效果部位度与Eleveld模型非常相似.
  • 在所有模拟受试者中,中位数绝对性能误差低于8.1%,最大绝对性能误差低于20.3%.
  • 该方法在改善Marsh模型对不同患者群体的精度方面被证明是有效的.

结论:

  • 拟议的重量调整方法为马什TCI模型提供了简单而强大的增强.
  • 这一修改显著提高了马什模型对年龄和体重指数极端患者的准确性.
  • 调整后的Marsh模型作为一个有价值的替代品,直到更先进的TCI模型在商业上上市.