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Related Concept Videos

Renal Failure: Dose Adjustments01:11

Renal 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...
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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.
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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
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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.
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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Related Experiment Video

Updated: Feb 7, 2026

Author Spotlight: Understanding the Effect of Herbal-Cake-Separated Moxibustion in Rats with Renal Faliure
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Dysnatremia in Renal Failure.

Taisuke Shimizu, Masaaki Terao, Hiroaki Hara

    Contributions to Nephrology
    |July 25, 2018
    PubMed
    Summary

    Early chronic renal failure (CRF) impairs salt reabsorption, leading to hyponatremia. Advanced stages (ESRD) shift towards hypernatremia due to water loss overcoming salt loss in kidney disease.

    Area of Science:

    • Nephrology
    • Physiology
    • Pathology

    Background:

    • Chronic renal failure (CRF) impacts proximal tubule function, affecting salt and water balance.
    • Altered expression of salt-transporting molecules, including Na-K-ATPase, is implicated in early CRF.
    • Clinical observations in chronic kidney disease (CKD) show distinct patterns of sodium imbalance across disease stages.

    Purpose of the Study:

    • To investigate the relationship between proximal salt reabsorption and electrolyte imbalances in chronic renal failure.
    • To correlate findings from animal models with clinical trends in CKD patients regarding hyponatremia and hypernatremia.
    • To elucidate the pathomechanisms underlying salt and water loss in different stages of kidney disease.

    Main Methods:

    • Review of animal model data on proximal tubule function in simulated CRF.

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  • Analysis of large-scale clinical studies examining electrolyte status in CKD patients.
  • Correlation of experimental findings with observed clinical trends in hyponatremia and hypernatremia.

    • Main Results:

    • Diminished proximal salt reabsorption, linked to reduced Na-K-ATPase expression, is observed in early CRF.
    • Animal models predict hyponatremia in early CRF and hypernatremia in advanced stages.
    • Clinical data confirm hyponatremia is more common in early CKD, while hypernatremia prevails in end-stage renal disease (ESRD).

    Conclusions:

    • Salt loss is a primary issue in early CKD, contributing to hyponatremia.
    • In ESRD, water loss becomes dominant, leading to hypernatremia.
    • Understanding these distinct electrolyte disturbances is crucial for managing patients with progressive kidney disease.