Incidence and severity of arrhythmias and conduction disturbance after repair of tetralogy of Fallot.

Ventricular and supraventricular arrhythmias and conduction disturbances were evaluated by routine electrocardiography and 24-hour ambulatory monitoring in 31 patients who underwent correction of tetralogy of Fallot. The interval from operation to the study was 1 month to 14 years (mean 4.8 +/- 2.