航空医疗后送创伤患者：飞行路径模型对人群覆盖估计的影响。
Aeromedical retrieval of trauma patients: Impact of flight path model on estimates of population coverage.
机构信息
School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA.
出版信息
Am J Surg. 2020 Sep;220(3):765-772. doi: 10.1016/j.amjsurg.2020.01.056. Epub 2020 Feb 4.
BACKGROUND
The aim of this study was to compare the impact of different flight path models on the calculated population coverage of aeromedical retrieval systems, using the state of Alabama as a case study.
METHODS
Geospatial analysis of U.S. Census Bureau population data using helicopter bases and trauma centers as foci of either circular or elliptical coverage areas.
RESULTS
Circular isochrone models around helicopter bases or trauma centers suggest that the entire population of Alabama could reach a level I or II trauma center within 60 min. Elliptical isochrones, incorporating outbound and inbound flights, suggest that only 78.8% of the population have ready access to level I or II trauma centers.
CONCLUSION
While all three flight path models described have some validity and utility, simplistic circular flight time isochrones around trauma centers and helicopter bases provide overly optimistic estimates of population coverage. The elliptical model provides a more realistic evaluation.
背景
本研究旨在比较不同飞行路径模型对航空医疗后送系统计算的人群覆盖范围的影响，以阿拉巴马州为例。
方法
使用直升机基地和创伤中心作为圆形或椭圆形覆盖区域的焦点，对美国人口普查局人口数据进行地理空间分析。
结果
以直升机基地或创伤中心为中心的圆形等时线模型表明，阿拉巴马州的全部人口可在 60 分钟内到达一级或二级创伤中心。纳入进、出港航班的椭圆形等时线模型表明，只有 78.8%的人口可以方便地到达一级或二级创伤中心。
结论
虽然描述的三种飞行路径模型都具有一定的有效性和实用性，但以创伤中心和直升机基地为中心的简单圆形飞行时间等时线对人群覆盖范围的估计过于乐观。椭圆形模型提供了更现实的评估。
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