She had heart surgery in 2012 to correct heart valve damage caused by a heart infection that would have been catastrophic if left unchecked.

In 2005, Natasha Lyonne  was taken to Manhattan's Beth Israel Medical Center with hepatitis C, a heart infection

She understood the surgeons would attempt to save her life by separating her sternum.

Natasha Lyonne Surgery: Did Natasha Lyonne Have Heart Surgery? Check Here For Full Details