A donor heart was implanted to supplement Tyson Smith's own heart.
Smith was born with a progressive condition that enlarged his heart. It's nearly 4 times the size it should be.
Congestive heart failure coupled with high blood pressure made a traditional heart transplant impossible. A so-called "piggy-back" procedure was the option.
The donor heart was attached to Smith's weaker one.
The organs now work together, and Smith is expected to have a healthy, normal life.