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Related Concept Videos

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

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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 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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Heart Failure Drugs: Diuretics01:22

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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...
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Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

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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.
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Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

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Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
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A Surgical Model of Heart Failure with Preserved Ejection Fraction in Tibetan Minipigs
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Thyroid Dysfunction and Heart Failure: Mechanisms and Associations.

Hernando Vargas-Uricoechea1, Anilza Bonelo-Perdomo2

  • 1Division of Endocrinology and Metabolism, Internal Medicine Department, Universidad del Cauca, Carrera 6 No. 13N-50, Popayán, Cauca, Colombia. hernandovargasu10@yahoo.com.

Current Heart Failure Reports
|February 9, 2017
PubMed
Summary
This summary is machine-generated.

Thyroid dysfunction impacts heart failure patients, but studies lack evidence that treating thyroid issues improves outcomes. More research is needed on thyroid hormone treatments for heart failure.

Keywords:
Heart failureHyperthyroidismHypothyroidismThyroid hormones

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Area of Science:

  • Cardiology
  • Endocrinology
  • Internal Medicine

Background:

  • Thyroid hormones (THs) are crucial for cardiovascular function.
  • Thyroid dysfunction (TD) is common in heart failure (HF) patients.
  • The precise impact of TD on HF pathophysiology and prognosis remains unclear.

Purpose of the Study:

  • To review current knowledge on TD pathophysiology in HF.
  • To elucidate the mechanisms and cardiovascular impact of TD stages in HF.
  • To update on the cardiovascular effects of TD in heart failure.

Main Methods:

  • Literature review of existing studies on TD and HF.
  • Analysis of pathophysiological mechanisms linking TD and HF.
  • Synthesis of current evidence on cardiovascular impact.

Main Results:

  • TD influences cardiovascular system regulation, affecting cardiac function.
  • No long-term studies demonstrate that TD intervention improves HF prognosis.
  • Hypothyroidism treatment in HF may improve risk factors, but not cardiovascular events.

Conclusions:

  • TD is associated with varied clinical outcomes in HF patients.
  • Further research is required on TD treatment modalities in HF.
  • Randomized trials are needed to assess the effect of TD treatment on cardiovascular events in HF.