Another critical Echo feature of constrction is preserved (>= 8cm/s) or ⬆️ mitral Medial Annulus e' velocity which is ⬇️ in ALL MYOCARDIAL DISEASES. When CP is mixed with myopathy, e' is lower than that in pure CP. Constriction until proven otherwise when e' is⬆️ in HF patient! pic.twitter.com/D4PGv5p9i8