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Related Concept Videos

Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

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...
Renal Drug Excretion: Overview01:15

Renal Drug Excretion: Overview

As primary excretory organs, the kidneys maintain homeostasis by removing waste substances from the bloodstream. They comprise over a million units called nephrons, which serve as the kidney's functional units.
A nephron consists of two primary structures: the renal corpuscle and the renal tubule. The renal corpuscle contains the glomerulus, a network of capillaries where the first step of renal excretion, glomerular filtration, occurs. Blood pressure forces water, ions, and small molecules out...
Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
Drug Dosing in Renal Diseases: Measurement of Glomerular Filtration Rate01:25

Drug Dosing in Renal Diseases: Measurement of Glomerular Filtration Rate

The glomerular filtration rate (GFR) is a critical indicator of kidney health, reflecting how well the kidneys filter blood. Changes in GFR can signal potential kidney impairment, necessitating accurate measurement methods to monitor kidney function effectively.Various molecules can serve as markers for GFR measurement, with the ideal marker meeting several specific criteria. It must freely filter at the glomerulus, avoid reabsorption or secretion by the renal tubules, remain unmetabolized, not...
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

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...
Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration01:28

Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration

Glomerular filtration rate (GFR) can be estimated from serum creatinine using the modification of diet in renal disease (MDRD) formula or the chronic kidney disease–epidemiology collaboration (CKD–EPI) equation. Both methods are widely used in clinical practice to assess kidney function and guide treatment decisions.The MDRD equation does not require weight or height measurements and is normalized to the body surface area of 1.73 m², considered the average adult surface area. This equation is...

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Related Experiment Video

Updated: Jul 4, 2026

Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats
06:38

Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats

Published on: March 11, 2016

[Evaluation of renal function: an update].

M Froissart1, P Delanaye, S Séronie-Vivien

  • 1Service de physiologie, Hôpital européen Georges Pompidou, AP-HP et Faculté de médecine, Université Paris Descartes, Paris, France. marc.froissart@egp.aphp.fr

Annales De Biologie Clinique
|June 19, 2008
PubMed
Summary
This summary is machine-generated.

Estimating Glomerular Filtration Rate (GFR) needs improvement, especially for high GFR populations. New methods using calibrated creatinine and cystatin C aim for more precise GFR prediction.

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Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat
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Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat

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Transcutaneous Assessment of Renal Function in Conscious Rodents
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Transcutaneous Assessment of Renal Function in Conscious Rodents

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Related Experiment Videos

Last Updated: Jul 4, 2026

Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats
06:38

Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats

Published on: March 11, 2016

Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat
06:58

Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat

Published on: July 26, 2015

Transcutaneous Assessment of Renal Function in Conscious Rodents
07:18

Transcutaneous Assessment of Renal Function in Conscious Rodents

Published on: March 26, 2016

Area of Science:

  • Nephrology
  • Clinical Chemistry

Context:

  • Glomerular Filtration Rate (GFR) estimation is crucial in kidney function assessment.
  • Current GFR prediction equations show limitations, particularly in populations with high GFR.
  • Standardization of creatinine assays and development of new GFR markers are ongoing.

Purpose:

  • To highlight the need for improved GFR estimation formulas.
  • To discuss advancements in creatinine calibration and the emergence of new GFR markers like cystatin C.
  • To emphasize the ongoing efforts in developing more precise GFR prediction models.

Summary:

  • Recent advancements focus on comparing new formulas with GFR measurements and standardizing creatinine assays.
  • Calibrated creatinine is expected to enhance GFR estimation performance.
  • New GFR markers, such as cystatin C, and data pooling across populations are being explored to refine prediction accuracy.

Impact:

  • Improved GFR estimation will lead to more accurate diagnosis and management of kidney diseases.
  • Enhanced prediction models can benefit clinical decision-making, especially for diverse patient populations.
  • Further research in GFR markers and prediction equations is essential for advancing nephrology.