Medical calculator

Canadian Syncope Risk Score (CSRS)

Estimates 30-day risk of serious adverse events after syncope.

Select the items according to the emergency assessment. Higher scores indicate greater 30-day risk of serious adverse events.

Scoring items

Predisposition to vasovagal symptoms

History of heart disease

Systolic blood pressure <90 or >180 mmHg

Troponin elevated above normal limit

Abnormal QRS axis

QRS duration >130 ms

QTc >480 ms

Emergency diagnosis of vasovagal syncope

Emergency diagnosis of cardiac syncope

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Important Notice

This resource is intended for educational purposes only and is intended for US healthcare professionals. Healthcare professionals should use independent medical judgment. All decisions regarding patient care must be handled by a healthcare professional and be made based on the unique needs of each patient.