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  • Title: Prospective performance assessment of an out-of-hospital protocol for selective spine immobilization using clinical spine clearance criteria.
    Author: Domeier RM, Frederiksen SM, Welch K.
    Journal: Ann Emerg Med; 2005 Aug; 46(2):123-31. PubMed ID: 16046941.
    Abstract:
    STUDY OBJECTIVE: We determine whether the use of an emergency medical services (EMS) protocol for selective spine immobilization would result in appropriate immobilization without spinal cord injury associated with nonimmobilization. METHODS: A 4-year prospective study examined EMS and hospital records for patients after the implementation of an EMS protocol for selective spine immobilization. EMS personnel were trained to perform and document a spine injury assessment for out-of-hospital trauma patients with a mechanism of injury judged sufficient to cause a spine injury. The assessment included these clinical criteria: altered mental status, evidence of intoxication, neurologic deficit, suspected extremity fracture, and spine pain or tenderness. The protocol required immobilization for patients with a positive assessment on any of those criteria. Outcome characteristics included the presence or absence of spine injury and spine injury management. RESULTS: The study collected data on 13,483 patients; 126 of the patients were subsequently excluded from the study because of incomplete data, leaving a study sample of 13,357 patients with complete data. Spine injuries were confirmed in the hospital records for 3% (n=415) of patients, including 50 patients with cord injuries and 128 patients with cervical injuries. Sensitivity of the EMS protocol was 92% (95% confidence interval [CI] 89.4 to 94.6%) resulting in nonimmobilization of 8% of the patients with spine injuries (33 of 415). None of the nonimmobilized patients sustained cord injuries. The specificity was 40% (95% CI 38.9 to 40.5%). CONCLUSION: The use of our selective immobilization protocol resulted in spine immobilization for most patients with spine injury without causing harm in cases in which spine immobilization was withheld.
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