antiarrhythmic treatment was required in 35 patients aged one day to 11 8/12 years ( average 5 7/12 years ) for one or several of the following arrhythmias : paroxysmal supraventricular tachycardia ( 17 ) , ventricular extrasystole ( 16 ) , ventricular tachycardia ( 17 ) , ventricular extrasystole ( 16 ) , ventricular tachycardia ( 4 ) , junctional tachycardia ( 4 ) , and atrial flutter ( 3 ) .
C0003811
arrhythmias
C0004239
atrial flutter