CHIP (CT in Head Injury Patients) Prediction Rule
Predicts intracranial traumatic CT findings in patients with minor head trauma.
INSTRUCTIONS
Use in patients at least 16 years old presenting within 24 hours of blunt head trauma and GCS 13–14 (or GCS 15 with at least one of the following: LOC, short-term memory deficit, amnesia, seizure, vomiting, severe headache, intoxication, anticoagulant use or history of coagulopathy, external evidence of injury above the clavicles, neurologic deficit). Note: We recommend using the Canadian CT Head Rule over other adult head trauma decision rules, as it is the most widely validated.
When to Use
<40 years
40-60 years
≥60 years
No
Yes
None
1 point
≥2 points
None
Skull contusion
Any injury suggesting skull fracture, e.g. palpable discontinuity of skull, CSF leakage, raccoon eyes, bleeding from ear
None
2 to <4 hr
≥4 hr
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Result:
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