17-18% of cases of syncope are attributable to arrhythmias
The greatest predictors of arrhythmias as the cause of syncope are:
a. Abnormal ECG (odds ratio 8.1)
b. History of CHF (odds ratio 5.3)
c. Age older than 65 (odds ratio 5.4)
[Sarasin, et al. Academic Emergency Medicine 2003]
References
