🧠 Medical Mnemonics | For Emergency Medicine & Neurology 🧠
Mnemonic: Canadian CT Head Rule
(When to order a CT head after minor head injury)
High Risk (for neurological intervention):
C - Clinically suspected open or depressed skull fracture
H - History of vomiting ≥ 2 episodes
A - Age ≥ 65 years
N - Neurologic deficit (e.g., limb weakness)
C - Confusion (GCS < 15 at 2 hrs post injury)
E - Evidence of basal skull fracture (e.g., raccoon eyes, Battle’s sign)
📌 If ANY of the above are present → order CT head.
🔗 Essential for ER, trauma, neurology, and neurosurgery.
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1December 7, 2025 587 3
