• H G Garrison, N H Benson, and T W Whitley.
• Department of Emergency Medicine, School of Medicine, East Carolina University, Greenville, NC 27834.
• Am J Emerg Med. 1989 Jul 1;7(4):384-6.

AbstractTo assess how soon rural emergency departments (EDs) call for helicopters to transport seriously injured patients, the records of all trauma victims (excluding isolated CNS trauma) transported by an emergency helicopter service from referring hospitals to a trauma center over an 18-month period were studied. Admission time to the referring ED was compared with the exact time a call for the helicopter was received and a time-to-request interval (TTR) was calculated. A total of 64 cases were studied. Fifty (78%) of the patients had blunt trauma; 14 (22%) had penetrating trauma. The average TTR for the helicopter was 69.8 minutes, with a range from 17 minutes before arrival at the referring ED to 337 minutes after arrival. Children (aged less than or equal to 16 years) had an average TTR of 34.1 minutes compared with 76.4 minutes for adults (aged greater than 16 years). Of the variables examined, patient age was the only factor significantly associated with TTR. These observations suggest that, except in children, there frequently is a lengthy time interval between the time trauma patients arrive at EDs in rural eastern North Carolina and the time an emergency helicopter service is called to transport them to a trauma center.

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