[用于估计功能的新式方程式:对药物剂量调整的意义]
1Institut für Public Health, Charité - Universitätsmedizin Berlin, 10117, Berlin, Deutschland. natalie.ebert@charite.de.
Innere Medizin (Heidelberg, Germany)
|January 22, 2024
概括
准确的功能评估对于治疗决策和药物剂量至关重要. 血清肌素在某些患者中是不可靠的; 囊素C提供了一个更好的替代方案来估计淋巴膜过率 (GFR).
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 临床化学 临床化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 准确评估功能对于治疗决策和药物剂量调整对于功能受损的患者至关重要.
- 淋巴膜过率 (GFR) 是功能的关键指标,影响治疗策略和药物管理.
研究的目的:
- 提供血清肌素和囊素C作为估计功能生物标志物的优缺点的概述.
- 讨论不同生物标志物在各种患者群体 (包括肌肉质量变化的患者) 中对GFR估计的适用性.
- 描述目前推的GFR估计方程及其适用性.
主要方法:
- 关于GFR估计方程和内源生物标志物有效性的高级出版物的审查.
- 在功能评估中分析血清肌素和囊素C的优缺点.
- 对不同患者组的GFR估计方程的检查.
主要成果:
- 血清肌氨酸不适合在显著减少或增加肌肉质量的患者中进行GFR测定;在这些情况下,应使用cystatin C.
- 现有的GFR估计方程存在局限性,特别是在针对儿科和老年人群的药物批准研究中.
- 估计的GFR (eGFR) 提供了一个粗略的估计,不应该被视为一个确切的值.
结论:
- 囊素C是一种比肌素更可靠的生物标志物,用于估计非典型肌肉质量患者的GFR.
- 对于EGFR<50毫升/分钟的患者,特别是那些功能严重受损 (eGFR<30毫升/分钟) 的患者,药物剂量调整通常是必要的.
- 有在线工具可用于帮助基于估计的GFR计算药物剂量.
相关概念视频
01:11Renal Failure: Dose Adjustments
92
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
92
01:17Factors Affecting Renal Clearance: Renal Impairment
95
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
95
01:06Renal Drug Clearance: Overview
204
Renal clearance is a crucial parameter in pharmacokinetics that quantifies the rate at which the kidneys excrete a drug. It represents a constant fraction of the central volume of distribution containing the drug that the kidney eliminates per unit of time.
Renal clearance can be calculated using different methods. One approach is to divide the urinary drug excretion rate by the plasma drug concentration. This method directly measures renal clearance, indicating the kidneys' efficiency in...
Renal clearance can be calculated using different methods. One approach is to divide the urinary drug excretion rate by the plasma drug concentration. This method directly measures renal clearance, indicating the kidneys' efficiency in...
204
01:08Renal Drug Clearance: Comparison Between Renal Excretion Methods
137
Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
137
01:07Determination of Renal Drug Clearance: Graphical and Midpoint Methods
125
Renal clearance, a crucial parameter in pharmacokinetics, can be determined using two different methods: the graphical method and the midpoint method. These methods provide insights into the rate of drug excretion by the kidneys and aid in assessing renal function.
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
125
01:11One-Compartment Open Model: Urinary Excretion Data and Determination of k
182
The one-compartment open model leverages urinary excretion data to estimate renal clearance, which gauges the kidney's capacity to expel a drug. This method offers several benefits, including directly measuring drug elimination and assessing the kidney's contribution to overall drug clearance. However, this approach has limitations. It assumes sole renal excretion of the drug, which is not true for all drugs. Accurate urinary excretion and plasma drug concentration measurement can also...
182