NPPB and Cowden syndrome 1: In a prospective study of 273 patients with CS, half of whom had ACS, elevated troponin levels, reflecting greater myocyte loss, were a better predictor of 30‐day mortality than NT‐proBNP,34 and are associated with unsuccessful weaning from veno‐arterial extracorporeal membrane oxygenation (V‐A ECMO).34, 61, 75