专家组估计的淋巴膜过率 (GFR):在不同临床群体中最大限度地提高准确性的统计考虑
Nora F Fino1, Lesley A Inker2, Tom Greene1
1Division of Biostatistics, Department of Population Health Sciences, University of Utah Health, Salt Lake City, Utah, United States of America.
PloS one
|December 2, 2024
概括
提高估计膜过率 (eGFR) 的准确性对于治疗病至关重要. 结合多个过标记和使用转移学习等先进方法,可以显著减少eGFR计算中的错误.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 生物标志物发现发现
- 临床化学 临床化学
背景情况:
- 精确评估膜过率 (GFR) 对于诊断和管理病至关重要.
- 目前估计的GFR (eGFR) 方法具有显著的错误率 (>30%在10-50%的患者中) 由于非GFR决定因素的变化,影响患者的护理.
- 现有的eGFR计算通常依赖于单个标记物,如血清肌素,精度有限.
研究的目的:
- 开发和评估基于面板的eGFR方法,使用多个过标记来提高准确性.
- 为了解决影响过标记精度的非GFR决定因素的种群变化造成的局限性.
- 调查转移学习对于纠正开发和应用群体之间的系统差异的有用性.
主要方法:
- 用8个标记物 (5种代谢物,3种蛋白质) 的小组估计GFR的建议和评估方法.
- 应用转移学习来解释人口之间的非GFR决定因素的系统差异.
- 利用异常值识别和可靠的估计技术来处理标记物的污染和变化.
主要成果:
- 一个由8个标记器组成的小组显示了提高eGFR精度的潜力.
- 标记物污染可能会使不精确度增加一倍以上,但强大的估计方法恢复了准确性.
- 转移学习有效地解决了系统差异,即使培训数据有限.
结论:
- 将多个过标记与先进的统计方法相结合,可以显著提高eGFR的准确性.
- 提出的方法提供了一个强大的方法来克服在不同人群的eGFR估计中的错误.
- 未来对额外代谢物的验证试验的开发将使面板eGFR的广泛临床应用成为可能.
相关概念视频
01:17Factors Affecting Renal Clearance: Renal Impairment
53
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...
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01:23Renal Clearance
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The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
733
01:02Renal Drug Excretion: Glomerular Filtration
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The kidney serves as the primary organ responsible for eliminating drugs and their metabolites from the body. This process, known as renal elimination, starts with glomerular filtration and results in urine formation. Each kidney houses millions of functional units called nephrons, where urine production occurs. A nephron has two main components: a renal corpuscle and a renal tubule.
Drugs gain access to the kidney via the renal artery, which progressively branches off into afferent arterioles....
Drugs gain access to the kidney via the renal artery, which progressively branches off into afferent arterioles....
153
01:28Glomerular Filtration Rate and its Regulation
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The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
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01:07Determination of Renal Drug Clearance: Graphical and Midpoint Methods
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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...
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01:11Renal Failure: Dose Adjustments
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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...
63