New York Heart Association classification

The New York Heart Association (NYHA) classification is a system that categorizes the severity of heart failure based on symptoms and physical activity levels. It has four classes: - Class I: No symptoms with ordinary activity. - Class II: Mild symptoms with activities like walking or climbing stairs. - Class III: Marked limitations; comfortable at rest but symptoms with less effort. - Class IV: Severe symptoms even at rest, unable to carry out activities without discomfort. This classification helps doctors assess the condition’s progression and guide treatment.