Canadian CT Head Rule
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Clinical significance
- neuroimaging not necessary if all major & minor criteria are negative
- neurosurgery consult if any positive major criteria
Procedure
- major criteria
- Glasgow coma scale < 15 2 hours after injury
- suspected open or depressed skull fracture
- sign of basilar skull fracture
- hemotympanum, 'racoon eyes' Battle's sign, CSF rhinorrhea
- vomiting more than once
- age >= 65
- minor criteria
- retrograde amnesia >= 30 minutes after injury
- dangerous mechanism of injury*
* pedestrian struck by motor vehicle
* occupant ejected from motor vehicle
* Fall from > 3 feet or > 5 stairs
More general terms
Additional terms
References
- ↑ MD+CALC: Canadian CT Head Injury/Trauma Rule http://www.mdcalc.com/canadian-ct-head-injury-trauma-rule/
- ↑ Papa L et al. Performance of the Canadian CT Head Rule and the New Orleans Criteria for predicting any traumatic intracranial injury on computed tomography in a United States level I trauma center. Acad Emerg Med 2012 Jan; 19:2. PMID: https://www.ncbi.nlm.nih.gov/pubmed/22251188