OESIL Risk Score (Syncope 1-Year Mortality)

Stratifies one-year mortality risk in adults presenting to the emergency department after syncope from four clinical findings, to help guide admission versus outpatient management.

Age older than 65 years (strict > 65; age 65 exactly scores 0)

History of cardiovascular disease (structural heart disease, CHF, peripheral arterial disease, prior stroke/TIA)

Syncope without prodrome (no warning symptoms before the episode; reversed: absence of prodrome is the +1 answer)

Abnormal electrocardiogram (arrhythmia, AV block, BBB/conduction delay, LV/RV hypertrophy, left axis deviation, old MI, ischemic ST/T changes)