NYHA Functional Class

NYHA Functional Class

Class I

Patients with no limitation of activities; they suffer no symptoms from ordinary activities.

Class II

Patients with slight, mild limitation of activity; they are comfortable with rest or with mild exertion.

Class III

Patients with marked limitation of activity; they are comfortable only at rest.

Class IV

Patients who should be at complete rest, confined to bed or chair; any physical activity brings on discomfort and symptoms occur at rest.

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