I think this is pretty well definitive on whether anything more could have been done to prevent Natasha Richardson's death. (Thanks to Getting Closer to Myself/Grand Rounds). Yes, delays caused by her own decisions, by the remoteness of the resort, and by the lack of air ambulance, played a role. But this doctor says: someone should have drilled a hole in her head. Certainly after the CT scan at a local hospital, but probably even before.
The fact that this was not done--the fact that it is unthinkable now without more tests being done--is common to the U.S., Canada and other Western countries. More "primitive" doctors, in more primitive settings, would have been more likely to just go ahead and do it.
In fact, this may be the oldest known medical procedure. Yet a rich celebrity in the modern world was deprived of it.