肥厚性心肌病在不同的医学中心,其各型发生率各异。在多伦多总医院左室非对称性肥厚性心肌病占95%、其中室间隔肥厚90%,心室中部肥厚1%,心尖部肥厚3%,后壁或/和侧壁肥厚1%。对称性肥厚性心肌病5%。肥厚的部位和范围:肥厚的部位和范围决定本病临床表现.基部的(主动脉瓣下)室间隔肥厚导致梗阻型肥厚性心肌病、而孤立的心尖部或侧壁的肥厚则不致引起梗阻。 Hypertrophic cardiomyopathy in different medical centers, the incidence of various types of different. In the General Hospital of Toronto left ventricular asymmetric hypertrophic cardiomyopathy accounted for 95%, of which interventricular septal hypertrophy 90%, central ventricular hypertrophy 1%, apical hypertrophy 3%, posterior wall or / and lateral wall hypertrophy 1%. Symmetry hypertrophic cardiomyopathy 5%. Hypertrophic sites and ranges: The location and extent of hypertrophy determine the clinical manifestations of the disease, and basal (aortic) ventricular septal hypertrophy results in obstructive hypertrophic cardiomyopathy whereas isolated apical or lateral hypertrophy does not cause obstruction .