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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...
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...
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...
Serum Studies: Renal Function Tests01:24

Serum Studies: Renal Function Tests

Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
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...

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Updated: Jul 5, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
08:50

Assessment of Vascular Function in Patients With Chronic Kidney Disease

Published on: June 16, 2014

Conventional markers of kidney function.

Sean M Bagshaw1, R T Noel Gibney

  • 1Division of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada. bagshaw@ualberta.ca

Critical Care Medicine
|April 11, 2008
PubMed
Summary
This summary is machine-generated.

Early detection of acute kidney injury (AKI) in intensive care units is crucial. New biomarkers like Cystatin C show promise for faster diagnosis than traditional markers, improving patient care.

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Last Updated: Jul 5, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
08:50

Assessment of Vascular Function in Patients With Chronic Kidney Disease

Published on: June 16, 2014

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

Assessment of Kidney Function in Mouse Models of Glomerular Disease
09:16

Assessment of Kidney Function in Mouse Models of Glomerular Disease

Published on: June 30, 2018

Area of Science:

  • Nephrology
  • Critical Care Medicine
  • Biomarker Discovery

Background:

  • Acute kidney injury (AKI) is a growing clinical challenge in intensive care units (ICUs).
  • Current diagnostic methods using serum creatinine and urea levels have limitations, often causing delayed recognition of AKI.
  • There is a critical need for improved diagnostic tools for early AKI detection and management in critical care.

Purpose of the Study:

  • To highlight the limitations of conventional markers for diagnosing AKI in ICUs.
  • To explore the potential of novel biomarkers, such as Cystatin C, for early AKI detection.
  • To emphasize the need for advanced diagnostic strategies in critical care nephrology.

Main Methods:

  • Review of current diagnostic practices for AKI in intensive care settings.
  • Discussion of the limitations of traditional kidney function markers (serum creatinine, urea).
  • Evaluation of emerging biomarkers, including Cystatin C, for assessing kidney function and injury.

Main Results:

  • Conventional markers (creatinine, urea) are insufficient for real-time AKI assessment and can delay diagnosis.
  • Cystatin C demonstrates superiority over conventional markers in detecting early changes in glomerular filtration rate and kidney injury.
  • Novel biomarkers hold potential to revolutionize critical care nephrology and patient management.

Conclusions:

  • Early and accurate diagnosis of AKI is a priority in intensive care.
  • Cystatin C and other novel biomarkers offer improved diagnostic capabilities for AKI.
  • Advancements in biomarker technology can significantly enhance the supportive and therapeutic management of AKI patients.