Extrication time prediction tool (2015)

Type of publication:
Journal article

Nutbeam, Tim, *Fenwick, Rob , Hobson, Charles, Holland, Vikki, Palmer, Michael

Emergency medicine journal : EMJ, May 2015, vol. 32, no. 5, p. 401-403 (May 2015)

Many patients will require extrication following a motor vehicle collision (MVC). Little information exists on the time taken for extrication or the factors which affect this time. To derive a tool to predict the time taken to extricate patients from MVCs. A prospective, observational derivation study was carried out in the West Midland Fire Service's metropolitan area. An expert group identified factors that may predict extrication time-the presence and absence of these factors was prospectively recorded at eligible extrications for the study period. A step-down multiple regression method was used to identify important contributing factors. Factors that increased extrication times by a statistically significant extent were: a physical obstruction (10 min), patients medically trapped (10 min per patient) and any patient physically trapped (7 min). Factors that shortened extrication time were rapid access (-7 min) and the car being on its roof (-12 min). All these times were calculated from an arbitrary time (which assumes zero patients) of 8 min. This paper describes the development of a tool to predict extrication time for a trapped patient. A number of factors were identified which significantly contributed to the overall extrication time.

Link to full-text: http://emj.bmj.com/content/32/5/401.abstract