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Related Concept Videos

Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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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...
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Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and...
4.0K
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

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Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
889
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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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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Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

4.6K
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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Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
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The Aging Heart.

Ying Ann Chiao1, Peter S Rabinovitch1

  • 1Department of Pathology, University of Washington, Seattle, Washington 98195.

Cold Spring Harbor Perspectives in Medicine
|September 3, 2015
PubMed
Summary
This summary is machine-generated.

Cardiac aging causes heart decline and increases cardiovascular disease risk. Research is revealing molecular causes and exploring interventions to delay or reverse heart aging.

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Area of Science:

  • Cardiology
  • Gerontology
  • Molecular Biology

Background:

  • Aging progressively impairs heart structure and function.
  • Cardiovascular diseases are a leading cause of death, with aging as a major risk factor.
  • Phenotypic changes in cardiac aging are known, but molecular mechanisms are emerging.

Purpose of the Study:

  • To overview phenotypic changes in cardiac aging.
  • To explore the molecular mechanisms underlying cardiac aging.
  • To present recent advances in interventions for cardiac aging.

Main Methods:

  • Literature review of phenotypic changes.
  • Analysis of molecular mechanisms.
  • Survey of current intervention strategies.

Main Results:

  • Cardiac aging involves structural and functional deterioration.
  • Molecular pathways are being identified as key drivers of cardiac aging.
  • Interventions targeting these pathways show promise in preclinical studies.

Conclusions:

  • Understanding cardiac aging mechanisms is crucial for developing effective interventions.
  • Targeting molecular pathways may offer new strategies to combat age-related heart disease.
  • Further research is needed to translate these findings into clinical practice.