Modified decision-making rule supported by scheduled telephone follow-up reduces head computed tomography utilization in children with mild traumatic brain injury: A cohort study.

Unnecessary computed tomography utilization is common in children with a mild traumatic head injury. It is valuable to find a reasonable strategy for the patient's management. The aim of this study was to investigate the effect of scheduled telephone follow-up on computed tomography utilization in children with a mild head injury. A 2-year cohort study was performed. Children diagnosed with mild traumatic brain injury (TBI) were evaluated with a scoring system upon their arrival and during 1 month of scheduled telephone follow-ups by nurses. The rates of head computed tomography utilization, delayed imaging, and delayed diagnosis were analyzed. The rate of computed tomography utilization was 64.3% and 46.1% (P = .00) in the retrospective and prospective study periods, respectively. During the prospective study period, there were no differences in the rates of delayed imaging (2.3% vs. 2.2%,P = .814) or the rates of delayed diagnosis of significant radiological findings (0.1% vs 0.2%,P = .672) in cases with versus without immediate computed tomography. Adoption of a modified decision-making rule supported by scheduled telephone follow-up can reduce head computed tomography utilization without increasing the rate of missed or delayed diagnosis of clinically significant TBI in children with mild TBI.