[RushCrush]

Sometimes an invasive surgery is necessitated by the size/ shape of the aneurysm. There are some brain aneurysms that cannot be treated with coils, purely because of their shape.

As I understand it, the invasive surgery would entail a longer recovery period but there is still the possibility of a full recovery.

I guess what I'm saying is that just because they may be doing an invasive surgery, it doesn't necessarily mean it is a more severe level of aneurysm.

[Maynerd]

I guess what I'm saying is that just because they may be doing an invasive surgery, it doesn't necessarily mean it is a more severe level of aneurysm.

Sort of true. Your are right they may be operating because of a large aneurysm or an aneurysm with viable arteries arising directly from the aneurysm sac that cannot be coiled. However these are also more surgically challenging cases.

We probably won't know for several days Sen Johnson's ultimate prognosis for recovery.