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Related Concept Videos

Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance01:25

Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance

In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance (Clcr), a...
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.
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...
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: 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...
Renal Drug Excretion: Tubular Secretion01:28

Renal Drug Excretion: Tubular Secretion

Active tubular secretion is a robust, energy-demanding process that utilizes carrier systems to transport drugs into renal tubules. The active renal secretion systems include the organic anion transporter (OAT) for weak acids and the organic cation transporter (OCT) for weak bases. Structurally similar drugs can compete for the same transporter, potentially leading to drug accumulation and toxicity. However, this principle can be exploited therapeutically. One example is probenecid (Probalan),...

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Ischemia-reperfusion Model of Acute Kidney Injury and Post Injury Fibrosis in Mice
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[Creatinine: past and present].

Pierre Delanaye1, Etienne Cavalier, Nicolas Maillard

  • 1Service de néphrologie-dialyse-transplantation rénale, CHU Sart Tilman, Liège, Belgium. pierre_delanaye@yahoo.fr

Annales De Biologie Clinique
|September 28, 2010
PubMed
Summary
This summary is machine-generated.

This review covers creatinine measurement methods and its use as a glomerular filtration rate marker. It discusses analytical and physiological limitations of serum creatinine and creatinine clearance.

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Area of Science:

  • Biochemistry
  • Clinical Chemistry
  • Nephrology

Context:

  • Serum creatinine is a widely used biomarker in clinical practice.
  • Accurate measurement of creatinine is crucial for assessing kidney function.
  • Understanding creatinine's physiological basis is essential for its interpretation.

Purpose:

  • To provide a comprehensive overview of creatinine measurement techniques.
  • To discuss the physiological rationale behind using creatinine as a marker of glomerular filtration rate.
  • To critically evaluate the limitations of creatinine and creatinine clearance in clinical settings.

Summary:

  • This review details historical data and various methodologies for measuring serum and urine creatinine.
  • It explains the physiological basis for creatinine's role in estimating glomerular filtration rate.
  • The article critically examines the analytical and physiological limitations associated with creatinine and creatinine clearance.

Impact:

  • Enhances understanding of creatinine as a biomarker for kidney function.
  • Highlights the importance of accurate creatinine assays and proper interpretation.
  • Provides critical insights into the limitations of creatinine clearance, guiding clinical decision-making.