Effect of propranolol and disopyramide on left ventricular function at rest and during exercise in hypertrophic cardiomyopathy

In 19 patients with hypertrophic cardiomyopathy (15 males, 4 females, mean age 49.2 ± 10.8 years) left ventricular function was studied with radionuclide ventriculography at rest and during exercise i