Wikipedia lists some of the most famous operations performed by Robert Liston. Among them the only surgery in history with 300% mortality rate:
Liston’s most famous case
Amputated the leg in under 21⁄2 minutes (the patient died afterwards in the ward from hospital gangrene, they usually did in those pre-Listerian days). He amputated in addition the fingers of his young assistant (who died afterwards in the ward from hospital gangrene, they usually did in those pre-Listerian days). He also slashed through the coat tails of a distinguished surgical spectator, who was so terrified that the knife had pierced his vitals he dropped dead from fright.
That was the only operation in history with a 300 percent mortality.
Via oper.ru.