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Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

1.1K
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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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...
1.2K
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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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...
4.2K
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...
734
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

3.3K
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...
3.3K
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

778
Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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2-Vessel Occlusion/Hypotension: A Rat Model of Global Brain Ischemia
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Heart Failure-Induced Brain Injury.

Ofer Havakuk1, Kevin S King2, Luanda Grazette3

  • 1Department of Cardiology, Division of Cardiovascular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California; Department of Cardiology, Tel Aviv Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.

Journal of the American College of Cardiology
|March 25, 2017
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Summary

Heart failure (HF) causes brain abnormalities affecting patient outcomes. Understanding HF

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cerebral blood flowcognitive impairmentdepression

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Area of Science:

  • Neurology and Cardiology
  • Systemic effects of cardiovascular disease

Background:

  • Heart failure (HF) is a systemic condition impacting multiple organs, including the brain.
  • Brain abnormalities, both structural and functional, are prevalent in HF patients.
  • These neurological changes are linked to adverse patient outcomes across various HF severities.

Purpose of the Study:

  • To review the pathophysiology of brain injury in heart failure.
  • To describe the impact of HF-related brain injury on patient outcomes.
  • To outline diagnostic strategies and potential therapeutic interventions for brain injury in HF.

Main Methods:

  • Literature review of existing studies on heart failure and brain injury.
  • Analysis of proposed neurohormonal, nutritional, and inflammatory mechanisms.
  • Synthesis of data on clinical presentation, diagnostic approaches, and therapeutic options.

Main Results:

  • Brain injury in HF is multifactorial, involving reduced cardiac output, cardiovascular risk factors, and neuroinflammatory pathways.
  • Neurological deficits in HF patients correlate with poorer prognosis and quality of life.
  • A comprehensive diagnostic and therapeutic approach is needed to address brain involvement in HF.

Conclusions:

  • Brain injury is a significant complication of heart failure with broad clinical implications.
  • Further research into the complex pathophysiology is warranted.
  • Targeted diagnostics and therapies may improve outcomes for HF patients with neurological compromise.