what are the different types of heart surgery?
['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).']