Less Is More? The Impact of Trauma Volume on the Positive Rate of Head Computed Tomography Scans in Head Trauma Patients
Table 1
Guidelines for emergent head CT scans for trauma patients. The guideline is modified from “CT rules for mild brain injuries” advocated by the Taiwan Neurosurgical Society http://www.neurosurgery.org.tw/nsr/tbi/main.htm.
Urgent scan is indicated
Moderate and severe head trauma
two hours after injury
Suspected skull or skull base fracture
Severe craniofacial trauma
Focal neurological deficit
Seizure attack after injury
Optional use of head CT scans
≧2 episode of vomiting
Aged years or ≦ 2 years
Drug or ethanol intoxication
Persistent diffuse headache
More than 30 minutes of amnesia or loss of consciousness
