Question: what are the different types of heart surgery?
Answer: Coronary artery bypass grafting (CABG). ... 
Heart valve repair or replacement. ... 
Insertion of a pacemaker or an implantable cardioverter defibrillator (ICD). ... 
Maze surgery. ... 
Aneurysm repair. ... 
Heart transplant. ... 
Insertion of a ventricular assist device (VAD) or total artificial heart (TAH).