Types of HCM | Incidence (%) |
Left ventricular involvement | |
Asymmetrical hypertrophy | 95 |
Ventricular septal hypertrophy | 80 |
Apical hypertrophy | 9 |
Midventricular hypertrophy | 4 |
Rare types | 2 |
Symmetrical (concentric) hypertrophy | 5 |
Right ventricular involvement | – |
↵1-150 At the Toronto General Hospital where approximately 1300 patients are registered in the HCM clinic. The incidence of the different types of HCM varies considerably among different centres.