[ECG characteristics in patients with idiopathic hypertrophic subaortic stenosis].

The ECG data on 111 patients aged 2-61 years with idiopathic hypertrophic subaortal stenosis are provided. Of these, 18 patients were examined over time (during 1 to 6 years). The ECG data were considered depending on the clinical disease progress, the patients' age, and the intracardiac and echocardiographic findings.