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Related Concept Videos

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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Imbalances in Cardiac Output01:26

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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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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Cardiomyopathy II: Dilated Cardiomyopathy01:30

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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
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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...
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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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Related Experiment Video

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Assessment of Myofilament Ca2+ Sensitivity Underlying Cardiac Excitation-contraction Coupling
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Myofilament dysfunction in diastolic heart failure.

Anahita Aboonabi1,2, Mark D McCauley3,4,5

  • 1Division of Cardiology, Department of Medicine, College of Medicine, University of Illinois at Chicago, 840 S. Wood St., 920S (MC 715), Chicago, IL, 60612, USA. anahita@uic.edu.

Heart Failure Reviews
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Diastolic heart failure (DHF) affects over half of heart failure patients but lacks effective treatments due to poorly understood mechanisms. Research into molecular and cellular processes offers new therapeutic targets for DHF.

Keywords:
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Area of Science:

  • Cardiology
  • Molecular Biology
  • Translational Medicine

Background:

  • Diastolic heart failure (DHF) accounts for over 50% of heart failure cases.
  • DHF is associated with metabolic syndrome, hypertension, diabetes, and aging.
  • Many DHF patients exhibit normal left ventricular ejection fraction, complicating diagnosis and treatment.

Purpose of the Study:

  • To review recent advancements in basic and clinical research on DHF.
  • To identify knowledge gaps in understanding diastolic dysfunction.
  • To define molecular determinants and propose novel therapeutic targets for DHF.

Main Methods:

  • Review of current scientific literature on DHF.
  • Analysis of molecular and cellular mechanisms underlying diastolic dysfunction.
  • Synthesis of findings from basic, clinical, and translational research.

Main Results:

  • Diastolic dysfunction mechanisms remain poorly understood, hindering effective DHF treatment.
  • Focusing on molecular and cellular processes is crucial for developing new therapies.
  • Current research highlights several potential molecular targets for DHF intervention.

Conclusions:

  • Understanding the molecular basis of DHF is critical for therapeutic development.
  • Novel therapeutic strategies for DHF can emerge from exploring cellular and molecular pathways.
  • Further research is needed to translate these findings into clinical practice for DHF patients.