Cardiac surgery is an operation conducted on the heart. It treats complications of ischemic heart disease (for example, coronary artery bypass grafting), correct congenital heart disease, or treat valvular heart disease. It also includes heart transplantation.
![Pulmonary Arterial Hypertension [PAH] - Symptoms & Signs - Causes - Diagnosis - Treatment](https://images.medindia.net/patientinfo/300_250/pulmonary-arterial-hypertension-pah.jpg)
