- Tom E. Diffenbach
- 42:284 year(s):day(s)
- United States (Cleveland)
The longest surviving quadruple heart bypass patient is Tom E. Diffenbach (USA), who has lived for 42 years 284 days, since his surgery on 9 December 1976, in Cleveland, Ohio, USA, as verified on 19 September 2019.
Tom underwent quadruple bypass surgery at the age of 33.