patients who had these 3 clinical variables had a much higher predicted incidence of cardiac arrest at 6 months ( 62 % ) and 12 months ( 76 % ) than did patients with an ejection fraction greater than 0.40 , without syncope or cardiac arrest before amiodarone therapy , and without vt during predischarge ambulatory electrocardiographic monitoring ( 2 % and 5 % , respectively ) ( p less than 0.02 ) .
C0039070
syncope
C0002598
amiodarone