[Obstructive cardiomyopathy with idiopathic hypertrophic subaortic stenosis in the pediatric age].

The clinical and haemodynamic features of obstructive cardiomyopathy with hypertrophic subaortic stenosis in a 12-yr-old boy are examined. A cardiac souffle had been present for 10 yr and precordial pain, cardiopalmus and effort dyspnoea for 5-6 yr. Familial association, ischaemic and pseudonecrotic ECG changes, and signs of left ventricle hypertrophy were noted. Left catheterisation and ventriculography showed obstructive hypertrophy of the muscle, two chambers with filling at 160/10 and ejection at 120/10, and slight regurgitation into the left trium. Treatment with 0.2-0.5 mg/kg/day propranolol.