B.2. What is the New York Heart Association classification of heart failure?
Answer:
The New York Heart Association heart failure classification is based on the severity of symptoms, specifically dyspnea and fatigue:
Class I—no symptoms (fatigue, palpitations, dyspnea, or angina) during ordinary physical activity; no limitations of physical activity
Class II—symptoms with ordinary activity but comfortable at rest; slight limitation of physical activity
Class III—symptoms with less than ordinary activity but comfortable at rest; marked limitation of physical activity
Class IV—symptoms at rest; inability to carry on any physical activity without discomfort
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