I read this at work last week, thought some of the more trauma oriented of you might find it interesting.
http://www.ncbi.nlm.nih.gov/pubmed/21131854
In essence, London HEMS did 71 thoracotomies in cardiac arrest following penetrating trauma to the chest and 13 of those patients survived...
One of the organisations that I work with does not tell it's driving crew member what the job is, merely where it is.
The idea is that the driver avoids, as much as possible, the 'red mist' by not knowing whether it's a child or really time critical job or something else that gets the...