Abstract
Background:Some emergency departments use triage scales, such as the Canadian Triage and Acuity Scale and the JUST, to detect the status of life-threatening situations. However, these triage systems have not been used for aeromedical services in Japan. Therefore, we investigated these profiles and conducted a pilot study.Method:We retrospectively evaluated the helicopter emergency medical service cases from 1 April 2015 to 31 March 2020 at Gifu University Hospital using our mission record. In this study, we only evaluated cases that dealt with internal medicine. We excluded cases that were influenced by external factors such as trauma or cases that included hospital-to-hospital transportation, focusing only on prehospital care. We evaluated the validity of medical emergencies such as emergency interventions and the necessity of hospital admission. In addition, we evaluated the validity of the suggested diagnoses and the associated risk factors.Result:A total of 451 cases were suitable for inclusion in the study. In the analysis for all emergency calls, 235 (52.11%) needed emergency intervention and 300 (64.4%) required hospital admission. The suggested diagnosis was valid for 261 (57.87%) cases. After the first assessment by emergency medical technicians (EMTs), 75 cases were removed from the analysis.Therefore, the results of the analysis for all emergency calls requiring emergency intervention were: 52.31%, need admission: 70.26%, and the suggested diagnosis was valid for 69.41% of cases. Results of a multivariate analysis of some key variables identified risk factors for emergency intervention, namely, age, under sports, and gasping. Hospital admission risk factors are being years old only. The suggested diagnosis was only valid in under sports situations.In the first analysis, the risk factors for emergency intervention are years old, being male, under sports, and gasping, and for hospital admission they are years old, being male, detecting stroke symptoms, and disturbance of consciousness. The suggested diagnosis was only valid in under sports situations.Conclusion:There are some “second” keywords/phrases that predict medical emergencies. Therefore, the dispatch commander should gather these keyword/phrases to assess.