💡 Track NYHA class at every visit — it's your trend indicator

Class	Limitation	Key Finding
I	None	Ordinary activity OK
II	Slight	Ordinary activity causes symptoms
III	Marked	Less than ordinary activity causes symptoms
IV	Severe	Symptoms at rest

Class II → III = early decompensation. Don't wait for Class IV.

Ask: "How far can you walk compared to last week?"

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