II. Criteria: Clinical
- Score -1: Vasovagal symptom predisposition
- Score 1: Heart disease history
- Score 2: Any systolic Blood Pressure reading <90 mmHg or >180 mmHg
III. Criteria: Evaluation
- Score 2: Troponin elevated
- Score 1: QRS Axis abnormal (<30 or >100 degrees)
- Score 1: QRS Duration >130 ms
- Score 2: QTc >480 ms
IV. Criteria: ED Diagnosis
- Score -2: Vasovagal Syncope
- Score 2: Cardiac Syncope
V. Interpretation (based on the sum of all 9 criteria)
- Score -3 to 0: Very low risk (serious adverse events <=0.9% in 30 days)
- Score 1: Low Risk (serious adverse events <=1.9% in 30 days)
- Score 2 to 3: Medium risk (serious adverse events 3.8 to 7.5% in 30 days)
- Score 4 to 5: High risk (up to 25% serious adverse event rate)
- Score >=6: Very high risk (up to 75% serious adverse event rate)
VI. Resources
- Canadian Syncope Risk Score