🫀 Canadian Syncope Risk Score (CSRS)
Predict 30-day serious outcomes after ED syncope with the CSRS.
Canadian Syncope Risk Score (CSRS)
Predisposition to vasovagal symptoms
History of heart disease
Any SBP < 90 or > 180 mmHg
Troponin > 99th percentile
Abnormal QRS axis
QRS duration > 130 ms
QTc > 480 ms
ED diagnosis
When to use
Guide disposition after syncope without an obvious serious cause.
How it works
Vasovagal predisposition (−1), heart disease (1), SBP < 90/>180 (2), troponin > 99th (2), abnormal QRS axis (1), QRS > 130 ms (1), QTc > 480 ms (2), ED diagnosis vasovagal (−2)/cardiac (2). Range −3 to 11.
Key points
- Low scores support discharge with follow-up.
- High scores warrant monitoring and cardiology input.
- Applies after initial ED assessment.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.