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Related Concept Videos

Chronic Kidney Disease II: Clinical Manifestations01:24

Chronic Kidney Disease II: Clinical Manifestations

Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
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...
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...
Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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...
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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.
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A Mouse 5/6th Nephrectomy Model That Induces Experimental Uremic Cardiomyopathy
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New insights into uremic toxicity.

Amanda C Raff1, Timothy W Meyer, Thomas H Hostetter

  • 1Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, New York, USA.

Current Opinion in Nephrology and Hypertension
|October 23, 2008
PubMed
Summary

Uremia involves illness from declining kidney function before end-stage renal disease (ESRD). New research identifies uremic toxins and syndromes, offering hope for novel treatments to improve patient outcomes.

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Area of Science:

  • Nephrology
  • Toxicology
  • Endocrinology

Background:

  • Uremia is a complex condition associated with declining glomerular filtration rate (GFR).
  • The understanding of uremia extends beyond metabolic derangements to include early-stage illness before end-stage renal disease (ESRD).

Purpose of the Study:

  • To review new insights into the accumulation and toxicity of uremic toxins.
  • To explore the role of hormonal and enzymatic dysfunction in the etiology of uremia.
  • To discuss emerging uremic syndromes and potential therapeutic targets.

Main Methods:

  • Review of accumulating data on uremic toxins and their effects.
  • Analysis of recent findings on immune dysfunction and uremic cachexia.
  • Exploration of new understandings in disordered feeding circuits.

Main Results:

  • Uremic toxins like rho-cresol sulfate and indoxyl sulfate are linked to cardiovascular disease and oxidative injury.
  • Impaired immunity is a significant factor in ESRD morbidity, potentially exacerbated by uremic toxicity.
  • Uremic cachexia is an underrecognized syndrome, with potential new therapies emerging from insights into feeding circuits.

Conclusions:

  • Mortality in ESRD remains high, underscoring the need for improved treatments.
  • Emerging knowledge on the causes and consequences of uremia is paving the way for new therapeutic strategies.
  • Further research into uremic toxins and syndromes offers hope for more effective management of uremia.