I didn't know Carvey had heart surgery.
Here's the short version:
A few years ago he was jogging and had some tightness in his chest. He went to the doc and they found his cholesterol was over 400 (due to genetics) and he had to have bypass surgery. He has the surgery and afterward still felt not right. He went to another doctor and they found the first doctor had operated on the wrong artery! So he had another surgery and sued the first doctor. He won something like $4 million and donated it all to the American Heart Association.