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Pathophysiology of Heart Failure

Pathophysiology of Heart Failure

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...

Heart Failure IV: Classification and Diagnostic Evaluation

Heart Failure IV: Classification and Diagnostic Evaluation

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...

Heart Failure II: Pathophysiology

Heart Failure II: Pathophysiology

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

Heart Failure I: Introduction

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...

Heart Failure V: Medical Management

Heart Failure V: Medical Management

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...

Heart Failure VII: Nursing Interventions

Heart Failure VII: Nursing Interventions

The first step in nursing management of a patient with heart failure involves thoroughly assessing the patient's medical history.Subjective Data: Obtain the patient's medical history of coronary artery disease, hypertension, myocardial infarction, and symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea.Objective Data: Conduct a physical examination to identify findings such as jugular vein distention, pulmonary crackles, tachycardia, murmurs, peripheral edema, and vital signs,...

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Related Experiment Video

Updated: Jul 8, 2026

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

Acute heart failure with preserved systolic function.

Rahul Kumar¹, Sanjay K Gandhi, William C Little

¹Cardiology Section, Department of Internal Medicine, Wake Forest University Health Sciences, Winston-Salem, NC, USA.

Critical Care Medicine

|February 15, 2008

Summary

This summary is machine-generated.

Acute heart failure with preserved ejection fraction is often caused by diastolic dysfunction. Strict hypertension control is crucial for managing this condition and preventing hospital readmissions.

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Area of Science:

Cardiology
Internal Medicine

Background:

Acute heart failure (AHF) often presents with severe hypertension and preserved left ventricular ejection fraction (HFpEF).
In these patients, AHF is typically attributed to diastolic dysfunction rather than systolic dysfunction or valvular issues.

Purpose of the Study:

To outline the diagnostic and management strategies for acute heart failure with preserved ejection fraction (HFpEF) in hypertensive patients.
To highlight the importance of identifying and addressing diastolic dysfunction as the primary cause.

Main Methods:

Review of clinical presentation and common etiologies of HFpEFin hypertensive patients.
Discussion of acute management strategies including hypertension control, diuresis, and ventilatory support.
Emphasis on post-acute workup for contributing factors like renal artery stenosis, valvular heart disease, and ischemia.

Main Results:

Diastolic dysfunction is the predominant cause of acute heart failure in patients with hypertension and preserved ejection fraction.
Acute management involves controlling hypertension, careful diuresis, and potential ventilatory support.
Chronic therapy lacks standardization due to limited clinical trial data, but strict hypertension control is vital.

Conclusions:

Diastolic dysfunction is a key mechanism in hypertensive acute heart failure with preserved ejection fraction.
Effective management hinges on acute interventions and thorough investigation of underlying causes.
Long-term therapeutic strategies require further research, with hypertension management being paramount.