standard clinical and echocardiographic criteria for heart failure
Reading File
Finding Sources
Finding Sources
Searching PubMed
"heart failure" AND echocardiography
Searching the Web
2021 ESC Guidelines heart failure diagnosis clinical criteria echocardiography LVEF categories
Reading File
Finding Sources
Finding Sources
Reading Web Page
https://www.escardio.org/communities/councils/cardiology-pra…
Reading File
Reading File
Reading File
Heart failure (HF) is a clinical syndrome, not an echocardiographic finding alone. Standard diagnosis requires:
- Typical symptoms and/or signs of HF
- Objective evidence of a structural or functional cardiac abnormality, often on echocardiography
- Supportive evidence of raised filling pressures, such as elevated natriuretic peptides or echo findings, especially when LVEF is not reduced.
This aligns with the guideline approach of symptoms/signs plus ECG, natriuretic peptides, and structural or functional abnormalities on echocardiography. ESC diagnostic approach
1. Clinical criteria
Common symptoms
- Exertional dyspnea
- Orthopnea
- Paroxysmal nocturnal dyspnea
- Fatigue and reduced exercise tolerance
- Ankle swelling
- Nocturnal cough, abdominal fullness, early satiety
Common signs
- Elevated JVP or hepatojugular reflux
- Peripheral pitting edema
- Bibasal lung crepitations
- Third heart sound (S3 gallop)
- Displaced apex beat, tachycardia
- Hepatomegaly, ascites, cool extremities in advanced HF
- Pulmonary edema or pleural effusions in acute congestion
Framingham clinical criteria
Often used in epidemiology and examinations. Diagnosis requires either 2 major criteria, or 1 major plus 2 minor criteria.
| Major criteria | Minor criteria* |
|---|---|
| Paroxysmal nocturnal dyspnea or orthopnea | Bilateral ankle edema |
| Neck-vein distension | Nocturnal cough |
| Pulmonary rales | Dyspnea on ordinary exertion |
| Cardiomegaly on chest radiograph | Hepatomegaly |
| Acute pulmonary edema | Pleural effusion |
| S3 gallop | Vital capacity reduced by one-third |
| Raised venous pressure >16 cm H₂O | Tachycardia >120/min |
| Hepatojugular reflux | |
| Weight loss >4.5 kg in 5 days after HF treatment |
*Minor criteria count only if not better explained by another condition.
Braunwald’s Heart Disease, p. 137.
NYHA functional class is not a diagnostic criterion. It grades limitation after HF is established:
- I: no limitation
- II: slight limitation
- III: marked limitation
- IV: symptoms at rest
2. Standard echocardiographic assessment
Transthoracic echocardiography should be obtained in suspected or newly diagnosed HF to assess ventricular function, chamber size, valvular disease, pulmonary pressures, and filling pressures. Goldman-Cecil Medicine, p. 468.
A. LV systolic function and LVEF phenotype
| HF phenotype | LVEF criterion | Requirement beyond EF |
|---|---|---|
| HFrEF | ≤40% | Symptoms/signs of HF |
| HFmrEF | 41-49% | Symptoms/signs plus evidence supporting raised filling pressures or structural disease |
| HFpEF | ≥50% | Symptoms/signs plus objective evidence of raised LV filling pressure and/or structural heart disease |
An LVEF value alone does not diagnose HF. A patient can have a low EF without current clinical HF, and a patient with normal EF can have HFpEF.
B. Echo findings supporting raised LV filling pressure or HFpEF
In a symptomatic patient with LVEF >40% or ≥50%, the following support HFpEF:
- Left atrial enlargement, commonly LA volume index >34 mL/m²
- Elevated average E/e′, typically >14 at rest
- Reduced mitral annular early diastolic velocity:
- Septal e′ <7 cm/s
- Lateral e′ <10 cm/s
- Increased tricuspid regurgitation velocity, typically >2.8 m/s, suggesting raised pulmonary pressures
- Dilated inferior vena cava with reduced inspiratory collapse
- LV hypertrophy or concentric remodeling
- Pulmonary hypertension
- Diastolic dysfunction on transmitral and tissue Doppler evaluation
For exercise-induced symptoms with inconclusive resting findings, exercise diastolic stress echocardiography can help. An exercise E/e′ >15 is abnormal and supports elevated filling pressures. Textbook of Clinical Echocardiography, p. 266.
C. Other important echo findings
Echo should also identify the cause or contributors to HF:
- LV dilatation or hypertrophy
- Regional wall-motion abnormalities, suggesting ischemic heart disease
- Right ventricular systolic dysfunction
- Significant mitral, aortic, or tricuspid valve disease
- Pericardial disease
- Congenital structural abnormalities
- Estimated pulmonary artery systolic pressure
Practical diagnostic formulation
A useful exam-style statement is:
Heart failure is diagnosed when typical symptoms and/or signs are accompanied by objective evidence of a structural or functional cardiac abnormality and, when required, evidence of elevated cardiac filling pressures.
For HFrEF, reduced LVEF ≤40% usually provides the principal objective abnormality.
For HFpEF, LVEF ≥50% must be accompanied by evidence such as LA enlargement, raised E/e′, LV hypertrophy, pulmonary hypertension, or raised natriuretic peptides.
For HFpEF, LVEF ≥50% must be accompanied by evidence such as LA enlargement, raised E/e′, LV hypertrophy, pulmonary hypertension, or raised natriuretic peptides.
Braunwald’s Heart Disease notes that HFpEF/HFmrEF diagnosis combines a clinical HF syndrome with LVEF >40% and corroboration of raised filling pressures by examination, natriuretic peptides, echocardiography, or invasive hemodynamics. Braunwald’s Heart Disease, HFpEF Diagnosis section.
This is a shared conversation. Sign in to Orris to start your own chat.