PROGNOSIS OF NONOBSTRUCTIVE HYPERTROPHIC CARDIOMYOPATHY

Among primary cardiac diseases, hypertrophic cardiomyopathy (HC) is known for its diverse clinical manifestations1 and different morphologic aspects.2 The clinical picture ranges from an asymptomatic form, corresponding with a mild, nonobstructive ventricular septal hypertrophy, to the disabled patient with impaired cardiac function or even sudden death,3 when a massive myocardial thickening and a very small left ventricular cavity can be found.5 Scarce data are available about the natural history of mild, nonobstructive HC.5 The present study explores this abnormality to see if it progresses to a more severe form of HC and if it results in any complications. © 1991.