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CATCH (Canadian Assessment of Tomography for Childhood Head injury) Rule

Suspicious open or depressed skull fracture
No 0
Yes 10
Worsen headache history
No 0
Yes 10
Irritation on exam
No 0
Yes 10
Basal skull fracture signs
Hemotympanum, CSF otorrhea or rhinorrhea, raccoon eyes, Battle’s sign
No 0
Yes 1
Large boggy scalp hematoma
No 0
Yes 1
Dangerous procedure of injury
MVC, fall from ≥3 ft (91 cm) or 5 stairs, fall from bicycle with no helmet
No 0
Yes 1
Result:

Background

Result Interpretation

Ranges Ranges