The SCAN rule
| Expedite CT brain imaging or arrange MRI for late-presenting patients with minor stroke if one or more of the following are present on history taking or assessment: | |
| (S) Severe hypertension at presentation: systolic blood pressure ≥80 mm Hg or diastolic blood pressure ≥110 mm Hg | |
| (C) Confusion | |
| (A) Anticoagulation use before stroke onset | |
| (N) Nausea and vomiting | |