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Calculators /
Canadian Syncope Risk Score

Heart disease history

CAD, atrial fibrillation or flutter, CHF, valvular disease
Elevated troponin

>99th percentile of normal population
Abnormal QRS axis

<-30°
QRS duration >130 ms
Corrected QT interval >480 ms
ED diagnosis

Based on ED evaluation
SBP <90 or >180 mmHg


Predisposition to vasovagal symptoms

e.g. Triggered by being in a warm crowded place, prolonged standing, fear, emotion, pain
Result : 0

Canadian Syncope Risk Score

Low  risk 1.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 5.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

High  risk 12.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 3.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 8.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

High  risk 19.7% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 28.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 40.3% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 52.8% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 65% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 75.5% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 83.6% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very low  risk 0.7% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very low  risk 0.4% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Low  risk 1.2% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Result : 0

Canadian Syncope Risk Score

Low  risk 1.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 5.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

High  risk 12.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 3.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Medium  risk 8.1% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

High  risk 19.7% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 28.9% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 40.3% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 52.8% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 65% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 75.5% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very high  risk 83.6% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very low  risk 0.7% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Very low  risk 0.4% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)

Canadian Syncope Risk Score

Low  risk 1.2% risk of 30-day serious adverse event (death, arrhythmia, MI — full list in Evidence)