MDCalc

Canadian Syncope Risk Score

Predicts 30-day serious adverse events in patients presenting with syncope.

Applicable to patients ≥16 years old presenting ≤24 hours of syncope. Do not use if: prolonged (>5 min) LOC, change in mental status from baseline, obvious witnessed seizure, major trauma, intoxication, language barrier, or head trauma causing LOC.

Predisposition to vasovagal symptoms
Triggered by being in a warm crowded place, prolonged standing, fear, emotion, or pain
Heart disease history
CAD, atrial fibrillation or flutter, CHF, valvular disease
sBP <90 or >180 mmHg
On any reading
Elevated troponin
>99th percentile of normal population
Abnormal QRS axis
<-30° or >100°
QRS duration >130 ms
Corrected QT interval >480 ms
ED diagnosis
Based on ED evaluation

Result:

Please fill out required fields.
Advice

Patients at medium or high risk (≥1 point) should undergo further investigation for cardiac and non-cardiac causes of syncope.

Have feedback about this calculator?