Isn't this pretty much accounted for by doctors at this point? Isn't it well know that there's a good chance that an elderly patient will die during or soon af

Isn't this pretty much accounted for by doctors at this point? Isn't it well know that there's a good chance that an elderly patient will die during or soon after significant surgery? For instance, there's a good chance that soon former President Jimmy Carter will once again have a fall that will result in him being hospitalized, and shortly after surgery, he'll pass.