NYHA Functional Classification
Class I (mild): Pts with cardiac disease who have no sx or limitation while performing ordinary physical activity (climbing stairs, etc)
Class II (mild): Pts with cardiac disease who have mild sx (mild sob, palpitations, fatigue, and/or angina) and slight limitation during ordinary physical activity. (5-10%) annual mortality rate.
Class III (moderate): Pts with cardiac disease who have marked limitation in activity due to sx, even during less-than-ordinary activity (walking short distances [ 20 - 100 m]. Comfortable at rest.
Class IV (severe): Pts with cardiac disease with severe limitations with sx even at rest. Mostly bedbound Pts. (30-70%) annual mortality rate
Find out the level of activity and the rate at which it is performed before onset of symptoms.
Ask what kind of task Pt. was able to perform a year before onset of sx and whether Pt. is able to perform those or similar tasks at present?