Okay, sorry, I didn't realize this wasn't a scheduled surgery, I only read the German article from the comments.
Yes there is the concept of implied consent for those cases where a patient can't make his will known. But in those cases you have to act along the presumed will of the patient. That will of the patient would regularily be presumed to contain the lege artis, at least in a setting where the hospital has been reached already and the option was available. So that again precludes untrained people participating in my view.
Yes it certainly didn't: It's a large language model, not some sort of knowledge engine. It can't analyze anything, it only generates likely text strings. I think this is still fundamentally misunderstood widely.