NPPB and acute myocardial infarction: [22], because diagnosis required either the presence of LVEF < 40% (instead of <50%), NT‐pro BNP > 400 ng/L (instead of >125 ng/L), presence of New York Heart Association class ≥ II (instead of any American Heart Association [AHA] stage) [29], presence of severe valvular disease, or a history of previous acute myocardial infarction (AMI).