NYHA Class
Also written as: NYHA — New York Heart Association
Functional classification system for heart failure severity based on symptoms and physical activity limitations.
Full Definition
The New York Heart Association (NYHA) functional classification system categorizes heart failure patients into four classes based on their symptoms and limitations in physical activity. Class I indicates no symptoms with ordinary activity, Class II involves slight limitation, Class III shows marked limitation, and Class IV represents severe symptoms at rest. In geriatric cardiology, NYHA classification must account for age-related baseline functional limitations and may not accurately reflect disease severity in frail elderly patients. The system remains widely used despite these limitations.
Usage
Usage note: Always use Roman numerals (I-IV) for class designation; spell out acronym on first use.
In Context
- "The patient's symptoms progressed from NYHA Class II to Class III over six months." — Cardiology follow-up note
- "NYHA Class assessment may be challenging in elderly patients with multiple comorbidities." — Clinical assessment guideline