Thoracolumbar immobilization for trauma patients with torso gunshot wounds- Is it necessary?

Background: Previous studies have suggested that patients transported by em ergency medical services (EMS) following major trauma had a longer injury-t o-treatment interval and a higher mortality rate than their non-EMS-transpo rted counterparts. Hypothesis: There is little actual benefit of thoracolumbar immobilization for patients with torso gunshot wounds (GSW). Design: Retrospective analysis of prospectively gathered data from the Mary land Institute for Emergency Medical Service Systems State Trauma Registry from July 1, 1995,through June 30, 1998. Settings: All designated trauma centers in Maryland. Patients: All patients with torso GSW. Main Outcome Measures: (1) A patient was considered to have benefited from immobilization if he or she had less than complete neurologic deficits in t he presence of an unstable vertebral column, as shown by the need for opera tive stabilization of the vertebral column; (2) mortality. Results: There were 1000 patients with torso GSW. Among them, 141 patients (14.1%) had vertebral column and/or spinal cord injuries. Two patients (0.2 %) (95% confidence interval, -0.077% to 0.48%) required operative vertebral column stabilization, while 6 others required other spinal operations for decompression and/or foreign body removal. The presence of vertebral column injury was actually associated with. lower mortality (7.1% vs 14.8%, P<.02 ). Conclusions: This study suggests that thoracolumbar immobilization is almos t never beneficial in patients with torso GSW, and that a higher mortality rate existed among those GSW patients without vertebral column injury vs th ose with such injuries. The role of formal thoracolumbar immobilization for patients with torso GSW should be reexamined.