in 9/13 cases no significant arrhythmia was ever documented , in 1/13 ventricular premature beats were present in the basal ecg , in 1/13 a atrial fibrillation and in 2/13 a supraventricular reciprocating tachycardia was recorded .
C0003811
arrhythmia
C0004238
atrial fibrillation