30. *-Abnormal electrocardiogram does not include sinus bradycardia or tachycardia or nonspecific ST- or T-wave changes alone. Ebell, Mark H. Syncope: initial evaluation and prognosis. American Family Physician 2006; 74(8): 1367-70. 27 3 or 4 16 2 9 1 1 0 One-year mortality rate (%) Number of risk factors History of ventricular arrhythmia History of congestive heart failure Age older than 45 years Abnormal electrocardiogram * Risk factors “ First Syncope Rule” Clinical Risk Score for Predicting One-Year Mortality in Patients with Syncope