• Thomas Arjan van Essen, Jorn Jesse Heeringa, and Jan-Paul Muizelaar.
• Department of Neurological Surgery, University of California Davis Medical Center, 4860 Y St., Suite 3740, Sacramento, CA 95817, United States. t.vanessen@erasmusmc.nl
• Clin Neurol Neurosurg. 2010 Nov 1; 112 (9): 775-80.

ObjectivesWhether or not a patient could benefit from a computed tomography (CT) scan and/or the evaluation by a neurosurgeon requires judgment by a clinician of the risk of clinical deterioration. To assess this clinical process we aimed to determine how many of the consultations to the Neurosurgical department (NSG) of UC Davis are appropriately indicated for neurosurgical input or management. Secondly, we investigated how CT is used in the University of California Davis Medical Center (UCDMC) in NSG consults of head injured patients compared to a validated and highly sensitive decision making tool, the Canadian CT Head Rule (CCHR).Patients And MethodsPatients were enrolled in this prospective study if they presented to a department of UCDMC other than neurosurgery and when, consequently, the NSG was consulted. The emergency consultations were categorized into three groups: head injury, spine injury and others. Subsequently, the appropriateness of the consultations was evaluated based on the need for evaluation determined by the likelihood of clinically important intracranial lesions for head injury and by the likelihood of clinically important spinal cord injury or spinal cord instability for spine injury. Of the head injured patients with a CT scan the appropriateness of the scan was determined by way of the CCHR.ResultsBetween 21 July and 15 August 2008 99 consultations were included: 32 patients with head injuries, 29 with spine injuries, 34 with other diseases and 4 not sufficiently documented patients. 23 classified inappropriate, 69 appropriate and 7 remained unclassified. Of the head injured patients, 10 (31.2%) had gotten a CT scan that was classified inappropriate.ConclusionNSG receives 3-4 requests for consultations per day from the other services of UCDMC, of which one is of questionable validity and one of the three CT scans for head injury is not necessary. These results suggest the use of the CCHR in UCDMC would improve patient care and could result in large health-care savings, while there would also be less radiation exposure.Copyright © 2010 Elsevier B.V. All rights reserved.

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