[beta-Blocking therapy in obstructive hypertrophic cardiomyopathy. Long term results (author's transl)].

34 patients have been controlled after beta-blocking therapy, for a mean period of 5 years. Symptoms and evolution: syncope disappeared, angoy passed from 47% to 23%, dyspnea from 65% to 47%, dizziness from 70% to 54%, weakness from 30% to 37%. A systolic murmur was present in 75% of the cases.