相关实验视频
Updated: Jul 26, 2025

05:52
Prehospital Thrombolysis: A Manual from Berlin
Published on: November 26, 2013
21.9K
玻尿酸注射到输液的5分钟延迟将组织等离子素激活剂的血度减半
Yuya Kobayashi1, Takuya Saito2, Yuichi Kawabata2
1Department of Neurology, Nagano Municipal Hospital, Nagano, Japan.
The Journal of emergency medicine
|June 17, 2023
概括
即使在中风后输注阿尔特等的短暂延迟也会由于其短半衰期而显著降低其度. 在脑梗塞患者有效的组织等离子素激活剂治疗中,即时的发球后输液至关重要.
科学领域:
- 药理学 药理学是指药理学的学科.
- 神经学 神经学
- 生物医学工程 生物医学工程
背景情况:
- 用组织等离子素激活剂 (alteplase) 及时治疗脑梗塞对于改善患者的治疗结果至关重要.
- 虽然减少玻尿酸注射时间是重点,但玻尿酸注射和玻尿酸注射后输液之间的延迟的影响不太了解.
研究的目的:
- 评估阿尔特普拉斯玻尿酸注射和玻尿酸注射后的时间间隔如何影响其药理学参数.
- 根据不同的中断时间量化阿尔泰酶度的降低.
主要方法:
- 使用R统计软件的linpk包进行了模拟,以精确计算alteplase度的变化.
- 在初始玻尿酸剂量后的0,5,15和30分钟间隔进行模拟后玻尿酸注入.
- 用6秒间隔的高精度计算来建模度变化.
主要成果:
- 阿尔特等的度最初达到1.23 mg/mL后玻尿酸.
- 在5分钟的延迟后,度下降了43.4%至0.53毫克/毫升.
- 进一步的延迟导致了更大的减少:在15分钟 (0.27毫克/毫升) 中减少了22.23%,在30分钟 (0.10毫克/毫升) 中减少了8.38%.
结论:
- 阿尔特普拉斯的半衰期很短,因此对服用延迟非常敏感.
- 即使在阿尔特普拉斯胆固醇和胆固醇后输注之间的短暂中断也会显著降低血清药物度.
- 在中风患者中,优化注射后注射时间至关重要,以保持治疗性阿尔特等水平.
相关概念视频
Two-Compartment Open Model: IV Bolus Administration
586
The two-compartment model for intravenous (IV) bolus administration illustrates drug distribution in the body, subdividing it into central and peripheral compartments. This model operates on the concept of two-compartment kinetics. The drug's plasma concentration shows a bi-exponential decline following IV bolus administration, signaling the presence of two disposition processes: distribution and elimination.
The disparity between drug input and the sum of drug transfer rates between...
The disparity between drug input and the sum of drug transfer rates between...
586
Nonlinear Pharmacokinetics: Drug Elimination for IV Bolus Injection
105
In pharmacokinetics, the elimination rate of a drug following a capacity-limited model is primarily controlled by two parameters: Vmax and KM. These parameters are crucial in how the drug behaves inside the body after administration.
Following the administration of a single intravenous (IV) bolus injection, we can determine the concentration of the drug in the plasma at any given time. This calculation is achieved using a specific equation that integrates the values of Vmax and KM.
We can also...
Following the administration of a single intravenous (IV) bolus injection, we can determine the concentration of the drug in the plasma at any given time. This calculation is achieved using a specific equation that integrates the values of Vmax and KM.
We can also...
105
Factors Affecting Drug Distribution: Organ Perfusion Rate
169
Drug distribution within the body is a complex process influenced by several factors, including perfusion rate, the rate at which the bloodstream transports drugs to tissue. This limitation becomes particularly significant when dealing with highly lipophilic drugs. In such cases, the rate at which the drug can move across membranes is crucial, and if the membrane is highly permeable to the drug, distribution becomes rate-limited by perfusion.
Perfusion rate-limited distribution relies on the...
Perfusion rate-limited distribution relies on the...
169
Drug Concentration Versus Time Correlation
907
The plasma drug concentration-time curve is a crucial tool in pharmacokinetics, representing the drug's concentration in plasma at different time intervals post-administration. This curve illustrates the drug's journey from absorption into the systemic circulation, distribution to body tissues, and eventual elimination through excretion or biotransformation.
Two pivotal parameters are the minimum effective concentration (MEC) and the minimum toxic concentration (MTC). The MEC is the...
Two pivotal parameters are the minimum effective concentration (MEC) and the minimum toxic concentration (MTC). The MEC is the...
907
One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution
351
The one-compartment open model is a simplified approach used in pharmacokinetics to understand the distribution and elimination of a drug administered through an intravenous bolus. This model assumes rapid drug dispersal throughout the body and elimination using a first-order process. Key pharmacokinetic parameters, such as the elimination rate constant (k), half-life (t1/2), and the apparent volume of distribution (Vd), can be estimated from this model. The elimination rate is calculated...
351
Time Course of Drug Effect
2.1K
The progression of a drug's impact can be analyzed by examining both the concentration-time course and the effect-time course. The concentration-time course is determined by the drug's half-life and is influenced by factors such as its pharmacokinetics, including absorption, distribution, metabolism, and elimination. The effect of the drug is often related to its concentration in the plasma and is calculated using the maximum drug effect and the plasma concentration that generates 50...
2.1K

