I believe the answer you are looking for is cardioplasty. The more specific term would depend on what part of the heart was being repaired.There are many types of heart surgery, the most common one being that of CABG (coronary artery bypass grafting).
Ventriculoplasty is the medical term meaning surgical repair of a ventricle of the heart. The ventricles are the lower chambers of the heart.
Angiorrhaphy is surgical suture of a vessel. Angi/o means blood vessel and rrhaphy is suturing. The junction in between two sutured blood vessels is called an anastamosis. Angioplasty is any surgical repair of a blood vessel.
Myocardiorrhaphy is the medical term meaning surgical suture of the heart muscle. -rrhaphy is the combining form meaning surgical suture.
Thoracotomy means surgical incision of the chest or thorax. A incision into the chest is done with two different methods. A incision into the front of the chest is known as a Median Sternotomy. This is usually the incision used for cardiac bypass, valve replacement, etc. A incision into the side of the chest is known as a Thoracotomy.
Septostomy is the medical term meaning surgical creation of an artificial opening in the septum. It can be done in the heart, for instance.
Arteriorrhaphy is the medical term for suture of an artery. This is when a surgeon will close up an artery. If an artery was severed, they would reattach both sides of the blood vessel walls, like stitching up a deep cut. A related term, angiorrhaphy, means suture of any vessel.
Valvectomosis
The atrial septum divides the right from the left atrium. The atria are smaller, less muscular chambers of the heart that sit atop the powerful ventricles.
CardiocentesisCardiocentesis
Aortoplasty is a general term for surgical repair of the aorta. That depends on the type of repair that is being performed, it can be called "Endovascular aortic aneurysm repair" when it is a surgical procedure to repair an aortic aneurysm done through the major blood vessels of the body. Depending on the procedure used and the problem being repaired different techniques may be used such as: Patching, used when there are tears in the valve, fixed through surgical insertion of a tissue patch. Commissurotomy, which is when the valve is narrowed, an incision of a commissure into the valve is used to fix the problem. Reshaping, used to reshape the valve so that it can close properly. Valvuloplasty, used to increase opening of valve and improve blood flow when the valve has become rigid with calcium buildup. This is done through the insertion of a balloon catheter. Decalcification, used when there is a calcium build up, removes excess calcium so that valve can function properly.
Cardiac auscultation is the medical term meaning listening to the heart.
As with any invasive surgical procedure, hemorrhage, infarction, stroke, heart attack, and infection are all possible complications of heart valve repair.