electrophysiological characteristics of atrioventricular ( a-v ) conduction and refractoriness were examined in 12 patients with lown-ganong-levine ( lgl ) syndrome referred for assessment of the following arrhythmias : ( group i ) regular narrow qrs tachycardia 6/12 ( 50 % ) , ( group ii ) atrial fibrillation ( af ) 2/12 ( 17 % ) , group iii ) ventricular tachycardia ( vt ) 4/12 ( 33 % ) .
C0003811
arrhythmias
C0004238
atrial fibrillation