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Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

45
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...
45
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

25
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
25
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.8K
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...
1.8K
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

21
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
21
Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

692
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
692
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

31
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...
31

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Updated: Aug 29, 2025

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
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Mitochondrial dysfunction in heart failure and its therapeutic implications.

Miaosen Liu1, Jialan Lv2, Zhicheng Pan2

  • 1Clinical Medicine, Zhejiang University School of Medicine, Hangzhou, China.

Frontiers in Cardiovascular Medicine
|September 12, 2022
PubMed
Summary
This summary is machine-generated.

Mitochondrial dysfunction is a key factor in heart failure, impairing energy production and leading to cell damage. Targeting mitochondrial quality control offers promising therapeutic strategies for heart failure treatment.

Keywords:
calciumfusion and fissionheart failuremitochondriamitophagyreactive oxygen species

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Area of Science:

  • Cardiology
  • Cellular Biology
  • Biochemistry

Background:

  • The heart requires substantial adenosine triphosphate (ATP) for continuous contraction and relaxation.
  • Mitochondria, the cell's powerhouses, are crucial for ATP generation.
  • Mitochondrial dysfunction is increasingly recognized as a central mechanism in heart failure pathogenesis.

Purpose of the Study:

  • To review the role of mitochondrial dysfunction in heart failure.
  • To highlight the contribution of mitochondrial dysfunction to cellular damage in heart failure.
  • To explore therapeutic strategies targeting mitochondrial function for heart failure.

Main Methods:

  • Literature review of studies on mitochondrial function in heart failure.
  • Analysis of emerging evidence on mitochondrial dysfunction's impact on cellular processes.
  • Examination of mitochondrial quality control mechanisms.

Main Results:

  • Mitochondrial dysfunction impairs energy production and utilization in heart failure.
  • Mitochondrial dysfunction contributes to calcium dysregulation, oxidative stress, and cardiomyocyte death.
  • These factors create a detrimental cycle in the failing heart.

Conclusions:

  • Mitochondrial dysfunction plays a critical role in the development of heart failure.
  • Complex signaling pathways in mitochondrial quality control offer therapeutic targets.
  • Strategies aimed at improving mitochondrial function hold significant promise for heart failure prevention and treatment.