A paramedic who follows treatment protocols according to a reasonable understanding of their terms is not negligent, even if the understanding is later shown to be incorrect, where the protocol was confusing or ambiguous. The standard of care for a statutory body preparing treatment protocols for paramedics is assessed by reference to the scientific and medical literature available at the time, and the body's failure to adopt a particular change is not negligent where the scientific evidence does not support the view that a change was reasonably required. There is no abstract standard of care applicable to an ambulance service independent of the conduct of its officers and the preparation of its protocols. The Fox v Percy principle of appellate restraint does not protect findings where the trial judge asked and answered the wrong question.
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