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Related Concept Videos

Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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...
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...
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...

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Related Experiment Video

Updated: Jun 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

Diastolic heart failure versus diastolic dysfunction: difference in renal function.

Brett M Victor1, John T Barron

  • 1Department of Medicine, Loyola University Chicago, Maywood, Illinois, USA.

Clinical Cardiology
|December 25, 2010
PubMed
Summary
This summary is machine-generated.

Renal insufficiency, not traditional risk factors, may determine if diastolic dysfunction leads to symptomatic heart failure in elderly patients. Lower creatinine clearance and eGFR were linked to diastolic heart failure.

Related Experiment Videos

Last Updated: Jun 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

Area of Science:

  • Cardiology
  • Nephrology
  • Geriatrics

Background:

  • Diastolic dysfunction with preserved ejection fraction is common in the elderly.
  • The reason some patients develop symptomatic diastolic heart failure while others remain asymptomatic is unclear.

Purpose of the Study:

  • To test the hypothesis that renal insufficiency is more prevalent in patients with diastolic heart failure compared to those with asymptomatic diastolic dysfunction.
  • To determine if intrinsic renal insufficiency dictates the symptomatic presentation of diastolic dysfunction.

Main Methods:

  • Retrospective review of 686 transthoracic echocardiograms (TTEs).
  • Collected patient demographics and cardiovascular risk factors (hypertension, diabetes, coronary artery disease).
  • Assessed diastolic heart failure using Framingham Criteria and calculated creatinine clearance (CrCl) and estimated glomerular filtration rate (eGFR).

Main Results:

  • 18 patients had diastolic heart failure, and 118 had asymptomatic diastolic dysfunction.
  • No significant differences in age, race, gender, or echocardiographic diastolic function/left ventricular hypertrophy between groups.
  • Lower CrCl and eGFR were significantly associated with diastolic heart failure, independent of traditional cardiovascular risk factors.

Conclusions:

  • Findings support the hypothesis that underlying renal insufficiency contributes to the development of congestive heart failure in patients with diastolic dysfunction and preserved ejection fraction.
  • Further large-scale, prospective studies are warranted to confirm these results.