Aztecs were pioneers in heart surgery!
The survival rate was kind of nonexistent, though... ;-P
LOL, you got that right! They seem to forget that aztecs were savages, demanding women and children from the surrounding tribes to sacrifice to their false gods. In fact, it was the surrounding tribes that allied with Cortez that enabled him to defeat the savage aztecs.
That they were. OK, well, the "anaesthetic" thing needed some work...