Canadian CT Head Injury/Trauma Rule
Clears head injury without imaging.
INSTRUCTIONS
Only apply to patients with Glasgow Coma Scale (GCS) 13-15 and at least one of the following:
- Loss of consciousness.
- Amnesia to the head injury event.
- Witnessed disorientation.
Exclusion criteria:
- Age <16 years.
- Blood thinners.
- Seizure after injury.
When to Use
Pearls/Pitfalls
Why Use
Exclusion Criteria: If any of the following are true, the CCHR does not apply
No
Yes
No
Yes
No
Yes
High Risk Criteria: Rules out need for neurosurgical intervention
No
0Yes
+1No
0Yes
+1No
0Yes
+1No
0Yes
+1No
0Yes
+1Medium Risk Criteria: In addition to above, rules out “clinically important” brain injury (positive CT's that normally require admission)
No
0Yes
+1No
0Yes
+1Result:
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