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Related Concept Videos

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 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 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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Anatomy of the Circulatory System02:03

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The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs.
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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 Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

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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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Related Experiment Video

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A High-Fidelity Porcine Model of Orthotopic Heart Transplantation Following Donation after Circulatory Death
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Mechanical circulatory support for end-stage heart failure.

Alain Combes1

  • 1Medical-Surgical Intensive Care Unit, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, F-75013 Paris, France; Sorbonne University, UPMC Univ Paris 06, INSERM, UMRS_1166-ICAN, Institute of Cardiometabolism and Nutrition, F-75013 Paris, France.

Metabolism: Clinical and Experimental
|February 4, 2017
PubMed
Summary

Mechanical circulatory support offers options for advanced heart failure. Venoarterial extracorporeal membrane oxygenation serves as short-term aid, while ventricular assist devices provide long-term solutions for eligible patients.

Keywords:
CardiogenicExtracorporeal membrane oxygenation (ECMO)Left ventricular assist device (LVAD)Mechanical circulatory supportShock

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Area of Science:

  • Cardiology
  • Medical Devices
  • Mechanical Circulatory Support

Background:

  • Advanced heart failure necessitates mechanical circulatory assistance.
  • Venoarterial extracorporeal membrane oxygenation (VA-ECMO) is crucial for acute cardiogenic shock with organ dysfunction.
  • Mechanical support offers a bridge to recovery, transplantation, or long-term solutions.

Purpose of the Study:

  • To review the role of mechanical circulatory support in advanced heart failure.
  • To outline the indications and types of mechanical support devices.
  • To discuss the application of VA-ECMO and ventricular assist devices (VADs).

Main Methods:

  • Review of current literature and clinical practices.
  • Analysis of patient stratification using INTERMACS classification.
  • Discussion of device types and their therapeutic applications.

Main Results:

  • VA-ECMO is the primary short-term support for acute cardiogenic shock.
  • Long-term VADs are indicated for INTERMACS class 2-6 patients pre-organ failure.
  • Miniaturized axial or centrifugal left VADs are commonly used for bridge-to-transplantation or destination therapy.

Conclusions:

  • Mechanical circulatory support is a vital therapeutic strategy for advanced heart failure.
  • Device selection depends on patient acuity, organ function, and therapeutic goals.
  • VADs offer significant benefits as bridge-to-transplantation or destination therapy.