ABSTRACT
Hypertrophic cardiomyopathy can be classifi ed into various hemodynamic subgroups. Patients may present with non-obstructive or obstructive disease; the latter may be even subclassifi ed into latent or provocable (resting gradient <30 mm Hg and >30 mm Hg after provocation) and resting obstructive hypertrophic cardiomyopathy (resting gradient >30 mm Hg).1
