As you're going down the IWR rabbit hole, have a watch of the below:
Putting a bent diver in the water on O2 carries higher risk than a typical safety stop. Having a full face mask, and as is called out in the presentation, one that provides constant positive pressure relative to the surrounding environment, is key to reducing risk to the patient.
As the
paper (David Doolette and Simon Mitchell) discussed in the above presentation states plainly in its abstract:
"The risk of IWR is not justified for treatment of mild symptoms likely to resolve spontaneously or for divers so functionally compromised that they would not be safe in the water. However, IWR conducted by properly trained and equipped divers may be justified for manifestations that are life or limb threatening where timely recompression is unavailable."
Getting back to duty of care so as to not make this a thread hijack, putting a patient back in the water for recompression without a full face mask or other airway protection, without a safety diver, without a means of retrieving an unconscious diver, etc. etc. etc. could be argued to breach your duty of care / be negligent. The general consensus has been not to do it, Dr. Doolette and Dr. Mitchells paper is a starting point on when/why/how to do it correctly. If you don't have everything squared away and are making decisions by the seat of your pants, you're more likely to take the exit towards negligence than reasonable.
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