Stages of Heart Failure
Staging heart failure patients from very mild to very severe helps healthcare professionals plan the optimal course of treatment for each individual. Staging enables clinicians to better predict the results of various treatment regimens for a single patient by looking at how large patient populations at the same stage have fared with those treatments. Staging also helps doctors and nurses share potential outcomes of treatment more accurately with patients and patient families. In addition, staging provides useful information for payors, providers, and researchers to more precisely describe groups of patients.
Two systems of staging are currently widely used around the world -- the New York Heart Association (NYHA) functional classification and the American Heart Association/American College of Cardiology (AHA/ACC) staging recommendation:
- NYHA staging for heart failure has been used for over 60 years. It focuses on the patient-reported level of symptoms.
- Class I - no symptoms
- Class II - symptoms only with more exercise than usual
- Class III - symptoms with ordinary activities
- Class IV - symptoms at rest
Although the classes seem vague, the NYHA classification has been applied to large numbers of patients and has demonstrated a strong record of utility in predicting real-world outcomes.
- The AHA/ACC recommendation includes, for the first time:
- Stage A patients are those at high risk of developing heart failure.
- Stage B patients have abnormalities of heart structure, but no symptoms of heart failure.
- Stage C patients have heart failure symptoms, or have had those symptoms in the past.
- Stage D patients have refractory end-stage heart failure.
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