Heart failure
Heart failure is a clinical syndrome in which the heart cannot fill or pump well enough to meet the body’s needs without abnormal pressure. It can cause breathlessness, fatigue and fluid retention and may worsen gradually or decompensate suddenly.
At a glance
Quick facts
- Category
- Cardiovascular syndrome
- Common symptoms
- Breathlessness, fatigue, edema
- Key test
- Echocardiogram
- Blood marker
- BNP / NT-proBNP
- Main phenotypes
- Reduced or preserved EF
- Course
- Chronic with possible acute decompensation
Dr. Augustine Chinemerem Anadu
Consultant Family Physician · University of Calabar Teaching Hospital
Reviewed for clinical accuracy, practical wording and general-medicine context.
Names & terminology
How this entity may be named or searched
- Heart failure
- A syndrome caused by structural or functional heart disease that impairs filling or pumping.
- HFrEF
- Heart failure with reduced ejection fraction.
- HFpEF
- Heart failure with preserved ejection fraction.
- Congestive heart failure
- An older/common term emphasizing fluid congestion; not every patient is congested at every stage.
Structured entity profile
Clinical profile
Overview
Heart failure does not mean that the heart has stopped. It means that heart structure or function is impaired enough that the circulation cannot meet the body’s needs normally. Common underlying causes include coronary artery disease, previous heart attack, high blood pressure, valve disease, cardiomyopathy and rhythm disorders. [1] [2]
Heart failure is often classified using left ventricular ejection fraction because treatment evidence differs across phenotypes. Symptoms also reflect congestion: fluid can accumulate in the lungs or peripheral tissues, producing breathlessness, swelling and rapid weight gain. [1] [2]
Symptoms and warning signs
Typical symptoms include shortness of breath during activity, breathlessness when lying flat, fatigue, reduced exercise tolerance and swelling in the feet, ankles or legs. Some people gain weight quickly from fluid retention or wake at night short of breath. [2]
SYMPTOM MATRIX
Heart failure symptoms reflect reduced cardiac output and fluid congestion
Rapid worsening can indicate acute decompensation and needs prompt assessment.
- Shortness of breath with activity
- Fatigue and reduced exercise tolerance
- Swollen ankles or legs
- Breathlessness when lying flat
- Rapid weight gain from fluid
- Night-time breathlessness
- Persistent cough or wheeze
- Abdominal swelling or poor appetite
- Dizziness or weakness
- Fast or irregular heartbeat
- Severe breathlessness at rest
- Chest pain or suspected heart attack
- Fainting or marked confusion
- Blue or gray lips with breathing difficulty
- Rapid deterioration with low blood pressure
Acute decompensated heart failure can be life-threatening and requires urgent medical assessment.
Diagnosis
When heart failure is suspected, clinicians combine history and examination with ECG, blood tests and natriuretic peptide testing. NICE uses NT-proBNP to help determine the urgency of specialist assessment in people with suspected chronic heart failure. [1]
I use symptom-based functional assessment, including NYHA class, alongside imaging. Echocardiography then helps define structure, function and ejection fraction.
Echocardiography evaluates ejection fraction, chamber size, valve disease and other structural abnormalities. Additional tests may look for coronary disease, rhythm problems, lung disease, anemia, kidney dysfunction, thyroid disease or other conditions that can mimic or contribute to heart failure. [1] [3]
Diagnostic pathway
Confirm the syndrome, define the phenotype and identify the cause
Symptoms alone are not specific enough to diagnose heart failure.
Natriuretic-peptide results are interpreted in clinical context because age, kidney function, obesity, atrial fibrillation and other factors can affect them. Source [1]
Reduced and preserved ejection fraction
Ejection fraction is one way to classify heart failure, but it does not measure the full severity of the syndrome. HFrEF and HFpEF can produce similar symptoms while having different mechanisms and evidence-based medicine pathways. Treatment should therefore be matched to the phenotype and comorbidities rather than symptoms alone. [1]
Treatment and management
Treatment includes self-management and evidence-based medicines tailored to the heart-failure phenotype. In HFrEF, modern treatment commonly combines several disease-modifying drug classes, while diuretics are used to relieve fluid congestion. HFpEF treatment also targets congestion and associated conditions such as hypertension, atrial fibrillation, diabetes and kidney disease. [1] [3]
Selected patients may benefit from implanted cardiac devices, revascularization or valve procedures. Cardiac rehabilitation, vaccination, monitoring of symptoms and weight, and management of kidney function and electrolytes are also important parts of ongoing care. [1] [3]
Treatment & care hub
Treat congestion, reduce events and manage the underlying cardiac disease
Heart-failure treatment depends on phenotype, symptoms, kidney function and comorbidities.
Use evidence-based combination treatment
Multiple medication classes are combined when tolerated to reduce hospitalization and mortality.
Relieve fluid overload
Diuretics reduce edema and breathlessness when fluid retention is present.
Treat the drivers
Coronary disease, hypertension, atrial fibrillation, diabetes, kidney disease and valve disease often need parallel management.
Consider specialist therapies
ICD, CRT, revascularization or valve procedures may be appropriate depending on cause and cardiac function.
Monitoring and self-management
People with heart failure are commonly advised to monitor for worsening breathlessness, swelling and sudden weight change and to follow an individualized plan for medicines, activity and when to seek help. Follow-up also checks kidney function, electrolytes, blood pressure, symptoms and treatment tolerance. [1] [3]
United States estimate
Nearly 6.7 million U.S. adults have heart failure
CDC estimates heart failure affects millions of adults and remains a major cause of hospitalization and death.
Common questions
Frequently asked questions
No. Heart failure means the heart cannot pump or fill effectively enough to meet the body’s needs under normal conditions.
Shortness of breath, fatigue, reduced exercise tolerance, ankle or leg swelling and breathlessness when lying flat are common.
Diagnosis combines symptoms and examination with tests such as ECG, natriuretic peptides and echocardiography.
Ejection fraction estimates the percentage of blood pumped out of the left ventricle with each contraction and helps classify heart-failure phenotypes.
Yes. Although it is usually chronic, treatment can reduce symptoms, hospitalizations and risk and can improve survival for many patients.
Sources
- NICE — Chronic heart failure in adults: diagnosis and management (NG106)
- NHLBI, NIH — Heart Failure — Symptoms
- NHLBI, NIH — Heart Failure — Diagnosis and Treatment
- CDC — About Heart Failure
This article is based on trusted medical sources and has undergone clinician review. It is not a substitute for personalized medical advice.
The pattern of congestion matters clinically: pulmonary congestion often drives breathlessness, while systemic venous congestion is more likely to produce peripheral swelling and rapid fluid-related weight gain.