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Related Concept Videos

Drug Dosing in Renal Diseases: Dose Adjustments Based on Drug Clearance and Elimination Rate Constant01:25

Drug Dosing in Renal Diseases: Dose Adjustments Based on Drug Clearance and Elimination Rate Constant

In patients with renal disease, dosage adjustments are necessary to maintain therapeutic plasma drug concentrations and prevent toxicity or subtherapeutic exposure. Renal impairment alters drug pharmacokinetics, especially in conditions like uremia, where changes such as prolonged elimination half-life and altered apparent volume of distribution can significantly affect drug disposition. These changes require careful modification of the dosing regimen to achieve the desired clinical...
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: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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...
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...
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...

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Related Experiment Video

Updated: Jun 21, 2026

Direct Drug Delivery to Kidney via the Renal Artery
11:18

Direct Drug Delivery to Kidney via the Renal Artery

Published on: April 17, 2021

Drug dosing in patients with impaired renal function.

D C Brater1

  • 1Division of Clinical Pharmacology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA. dbrater@iupui.edu

Clinical Pharmacology and Therapeutics
|July 24, 2009
PubMed
Summary

Kidney function significantly impacts how the body processes and responds to medications. Understanding these changes in drug disposition is crucial for making informed dosing decisions.

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

Published on: March 11, 2016

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Last Updated: Jun 21, 2026

Direct Drug Delivery to Kidney via the Renal Artery
11:18

Direct Drug Delivery to Kidney via the Renal Artery

Published on: April 17, 2021

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

Area of Science:

  • Pharmacology
  • Nephrology
  • Drug Metabolism

Background:

  • Renal function is a critical determinant of drug pharmacokinetics.
  • Altered kidney function can lead to significant changes in drug disposition.
  • Effective drug therapy requires consideration of renal status.

Purpose of the Study:

  • To review the fundamental principles of how renal function influences drug disposition and response.
  • To emphasize the impact of altered disposition parameters on clinical dosing strategies.
  • To provide a framework for optimizing drug therapy in patients with varying degrees of renal impairment.

Main Methods:

  • Literature review of pharmacokinetic and pharmacodynamic principles.
  • Analysis of how renal impairment affects drug absorption, distribution, metabolism, and excretion.
  • Discussion of clinical implications for drug dosing adjustments.

Main Results:

  • Changes in renal function alter drug disposition parameters, including clearance and volume of distribution.
  • These alterations necessitate modifications in drug dosage regimens to maintain therapeutic efficacy and minimize toxicity.
  • Individualized dosing based on renal function is essential for patient safety.

Conclusions:

  • Renal function plays a pivotal role in drug disposition and patient response.
  • Understanding the interplay between kidney function and drug pharmacokinetics is vital for safe and effective pharmacotherapy.
  • This review highlights the importance of adjusting drug doses according to renal status to optimize treatment outcomes.