fenoxedil chlorhydrate ( fc ) , which is used as a treatment for cerebral circulatory failure and peripheral vascular disease , has been given to 100 patients with a cardiac arrhythmia : atrial fibrillation ( 78 cases ) , atrial flutter ( 4 cases ) , atrial tachysystole ( 2 cases ) , ventricular extrasystoles ( 12 cases ) , and supraventricular extrasystoles ( 4 cases ) .
C0003811
cardiac arrhythmia
C0004239
atrial