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Self-extrication in road traffic collisions: do we really need to cut the roof off?

02 November 2014
Volume 6 · Issue 11

Abstract

Road traffic collisions are commonly encountered in the pre-hospital environment, and extrication of vehicle occupants can be challenging. Allowing a person to self-extricate from the vehicle, rather than using the process of prolonged mechanical extrication (the process of removing a vehicle from around a person), can be beneficial to the patient in a number of ways. The chance of catastrophic spinal injury (in this case taken to mean ‘any spinal injury that results in permanent disability, long-term medical problems or shortened life expectancy’) is low, and self-immobilisation during the extrication process will mean the patient is capable of protecting any injury they may have, without making it worse in any way. This is supported when the physiology of the spine, and the kinetics involved in road traffic collisions are considered. In addition, the self-extrication method is likely to reduce the time to definitive care, potentially improving the outcomes for many patients. It will also reduce anxiety, mental trauma and an unnecessary use of resources. Inviting a patient to remove themselves from a car is not a declaration of an uninjured cervical spine, and so immobilisation must still be used, in line with local policy, once the patient is out of the vehicle.

The author presents an algorithm to assist the pre-hospital clinician in deciding if self-extrication is appropriate. It is based on the alert, systemically well patient agreeing to the plan and being aware that they may change their mind at any time. The need for focused research on the mechanics of extrication, rather than methods of immobilisation, is encouraged with a view to a validated algorithm in the future.

This article reviews the small amount of available literature regarding pre-hospital self-extrication, and the mechanics of the spine and spinal cord, in an attempt to show that alert and conscious patients are capable of managing their own cervical spine (c-spine) during self-extrication, in line with the recommendations made by the Faculty of Pre-hospital Care (Connor et al, 2013). This will generally involve less movement than assisted extrication, as well as decrease the time to definitive care (by avoiding a prolonged mechanical extrication), utilise fewer resources and avoid the destruction of an often serviceable vehicle. The situation is analogous to a patient with a lower limb injury who will still be able to mobilise, but do so in a way to protect their own injury, without worsening it or causing pain. It must be continuously emphasised that this is not an attempt to ‘clear’ the c-spine, simply a means of extrication that allows the patient to manage their own injury (or potential injury) to reduce unnecessary movement, prior to immobilisation. This is something advocated by the author's HEMS team, and many other advanced trauma teams in the pre-hospital environment.

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