Research Article

Amino Acid-Based Metabolic Profile Provides Functional Assessment and Prognostic Value for Heart Failure Outpatients

Figure 1

HOP scores in different functional classes as defined by cardiopulmonary exercise test (CPET). (a) The receiver operating characteristic (ROC) curves of the HOP score and the traditional New York Heart Association functional classification (NYHA Fc) in discriminating CPET-defined from class I. (b) The HOP score discriminates CPET-defined functional classes II and III from class I with the optimal cutoff value set at 8.8. MET Fc: functional classification defined by metabolic equivalent (MET) as measured by CPET.
(a)
(b)