Heart Failure

Heart failure is a clinical syndrome in which the heart cannot pump enough blood to meet the body’s needs or can do so only at abnormally high filling pressures. Reduced cardiac function triggers compensatory neurohormonal responses, while inflammation and immune activation can promote myocardial injury, fibrosis, and adverse remodeling. In immunology and infection research, conditions such as infectious myocarditis illustrate how pathogens and host immune responses may contribute to heart failure. Understanding these mechanisms supports earlier diagnosis, risk assessment, and development of treatments that improve cardiac function, limit tissue damage, and address underlying inflammatory or infectious causes.

Heart Failure - Related Videos

Research

JoVE Journal - Medicine

Gene Transfer for Ischemic Heart Failure in a Preclinical Model

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Cited by 21 •

2011

A method of gene transfer for the treatment of ischemic heart failure is described using a swine model of myocardial infarction. Our simple and reproducible method enables us to readily evaluate the efficacy of various gene transfers with a very simple and reproducible way.

Education

JoVE Core - Medical-Surgical Nursing

Heart Failure II: Pathophysiology

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2025

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...

Heart Failure I: Introduction

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2025

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...

Pathophysiology of Heart Failure

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2024

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...

A Pacing-Controlled Procedure for the Assessment of Heart Rate-Dependent Diastolic Functions in Murine Heart Failure Models

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2023

The present protocol describes obtaining the pressure-volume relationship through transesophageal pacing, which serves as a valuable tool in evaluating diastolic function in mouse models of heart failure.

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