[Echocardiographic diagnosis of subpulmonic obstruction in hypertrophic cardiomyopathy (a case report) (author's transl)].

The echocardiogram of a patient presenting with a systolic ejection murmur and ECG evidence of left ventricular hypertrophy revealed asymmetric septal hypertrophy but no abnormal systolic anterior motion of the mitral valve as in IHSS. Her pulmonary echo disclosed small A waves, partial valve closure in early systole and coarse systolic fluttering. This motion pattern--which is similar to that of patients with infundibular pulmonary stenosis and which resembles the aortic valve motion pattern in discrete subaortic stenosis--led us to the diagnosis of hypertrophic cardiomyopathy with subpulmonic obstruction, which was later confirmed by cardiac catheterization.