Prognostically, Ea/Emax has been shown to have short‐term significance in intensive cardiac care unit patients using a noninvasive echocardiography‐based method described by Chen et al.20, 21, 22Additionally, Antonini‐Canterin et al. investigated VA‐coupling after MI and found better prognostic value than brain natriuretic peptide for 5‐year mortality, also using the method described by Chen et al.22, 23Still, Ea/Emax is yet to be proven useful as a prognostic marker beyond conventional functional variables such as ejection fraction. Here, NPPB is linked to myocardial infarction.