Alshiifa Healthcare Services Pvt. Ltd. provides information on various types of cardiac surgery aimed at treating heart disorders that are unresponsive to other therapies. Key procedures include coronary artery bypass surgery, heart valve repair or replacement, pacemaker implantation, maze surgery, aneurysm repair, heart transplantation, and the use of ventricular assist devices. The document outlines these procedures' purposes, methods, and potential candidacy for patients suffering from heart conditions.