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NYHA Functional Classification

Name: NYHA Classification Calculator: Heart Failure Severity
Creator: MedicPulse

Classifies the severity of heart failure based on symptoms and physical activity limitations.

cardiology

FOR PROFESSIONAL USE ONLY

This calculator is a support tool intended exclusively for health professionals. It does not replace clinical judgment. The final decision regarding diagnosis and treatment is the sole responsibility of the professional.

NYHA Class I

No limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation, or dyspnea.

NYHA Class II

Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, or dyspnea.

NYHA Class III

Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, or dyspnea.

NYHA Class IV

Unable to carry on any physical activity without discomfort. Symptoms of heart failure at rest. If any physical activity is undertaken, discomfort is increased.

About this Calculator 💡

The NYHA (New York Heart Association) Functional Classification is a widely used system to classify the severity of heart failure based on patient symptoms and their limitation during physical activity. It categorizes patients into four classes: Class I (no limitation of physical activity), Class II (slight limitation, with symptoms on ordinary physical exertion), Class III (marked limitation, with symptoms on minimal physical exertion), and Class IV (symptoms at rest, with inability to carry on any physical activity without discomfort).

Formula

Calculation Methodology Clinical assessment of functional capacity in 4 classes

Reference

The Criteria Committee of the New York Heart Association. Nomenclature and Criteria for Diagnosis of Diseases of the Heart and Great Vessels. 9th ed. 1994.