<unk>  (also known as the David procedure) is a cardiac surgery procedure involving replacement of the aortic<unk>  without replacement of the aortic valve.  Two similar procedures were developed, one by Sir Magdi Yacoub, and another by Tirone David.
Valve-sparing aortic root replacement
Transcatheter aortic valve replacement
Aortic valve repair
Mitral valve repair
Mitral valve replacement
Valve repair versus valve replacement
Aortic valve replacement
Aortic stenosis valvuloplasty