Abstract

In heart failure (HF), New York Heart Association (NYHA) classification is widely applied for stratifying disease severity and prognosis [1,2]. The Weber classification differs from the NYHA classification in that it is based on measured peak oxygen consumption (VO2), which has been shown to be more objective and reproducible [3]. Patients in Weber class B are similar to NYHA class II patients in that they are a large, generally stable, and heterogeneous group in whom risk stratification can be relatively complex.

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