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Aeromedical retrieval of trauma patients: Impact of flight path model on estimates of population coverage.

Authors
  • Stone, K Lorraine1
  • Smedley, W Andrew2
  • Killian, John3
  • Stephens, Shannon W4
  • Griffin, Russell L5
  • Cox, Daniel B6
  • Kerby, Jeffrey D7
  • Jansen, Jan O8
  • 1 School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 2 School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 3 Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 4 Center for Injury Sciences, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 5 Center for Injury Sciences, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 6 Center for Injury Sciences, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 7 Center for Injury Sciences, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
  • 8 Center for Injury Sciences, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: [email protected].
Type
Published Article
Journal
American journal of surgery
Publication Date
Sep 01, 2020
Volume
220
Issue
3
Pages
765–772
Identifiers
DOI: 10.1016/j.amjsurg.2020.01.056
PMID: 32037046
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

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. Geospatial analysis of U.S. Census Bureau population data using helicopter bases and trauma centers as foci of either circular or elliptical coverage areas. 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. 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. Copyright © 2020 Elsevier Inc. All rights reserved.

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