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Minor head trauma: Is computed tomography always necessary?
E C Miller1, R W Derlet, D Kinser
1Division of Emergency Medicine, University of California, Davis, Medical Center, Sacramento, CA 95817, USA.
Annals of Emergency Medicine
|March 1, 1996
Summary
Routine head computed tomography (CT) for minor head trauma patients with normal mental status and no signs of depressed skull fracture offers minimal clinical value. These patients rarely require intervention, making routine CT unnecessary.
Area of Science:
- Emergency Medicine
- Radiology
- Neurosurgery
Background:
- Minor head trauma is a common emergency department presentation.
- Computed tomography (CT) is frequently used to evaluate head injuries.
- Determining the necessity of CT in specific patient groups is crucial for resource allocation and patient care.
Purpose of the Study:
- To assess the clinical utility of routine head CT scans.
- To identify patient subgroups with minor head trauma who benefit from head CT.
- To evaluate the yield of head CT in patients with normal mental status after minor head injury.
Main Methods:
- Prospective study of patients presenting to a Level I trauma center.
- Inclusion criteria: Glasgow Coma Scale score of 15 after minor head trauma with loss of consciousness or amnesia.
- Data analysis included chi-squared and student t-tests to compare outcomes.
Main Results:
- Of 1,382 patients, 6.1% had traumatic intracranial abnormalities on head CT.
- Only 0.2% of patients required surgery.
- Patients with loss of consciousness/amnesia but no signs of depressed skull fracture had a 3% abnormality rate, with no surgical interventions.
Conclusions:
- Routine head CT is not warranted for patients with minor head trauma, normal mental status, and no signs of depressed skull fracture.
- Head CT is indicated for patients with symptoms of head injury or apparent depressed skull fracture.
- Selective use of head CT can optimize clinical decision-making and resource utilization.