Coronary Artery Bypass Grafting (CABG) is the surgery done to by-pass clogged arteries supplying blood to the heart. It creates a bypass around the blocked part of a coronary artery to restore the blood supply to the heart muscle.

Coronary arteries are blood vessels that supply the heart muscle with oxygen and nutrients. When one or more of the coronary arteries becomes partially or totally blocked, the heart does not get an adequate blood supply. This is called ischaemic heart disease or coronary artery disease (CAD). It can cause heart pain or a heart attack.

Coronary angioplasty is a procedure used to open blocked or narrowed coronary (heart) arteries. The procedure improves blood flow to the heart muscle. It reduces damage to the heart muscle caused by heart attack.

Angiography is a medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins and the heart chambers.

The electrocardiogram (ECG) is a diagnostic tool that measures and records the electrical activity of the heart in exquisite detail. Interpretation of these details allows diagnosis of a wide range of heart conditions.

After heart surgery, it takes 4-6 weeks to start feeling better. During recovery it is normal to have a poor appetite, difficulty in sleeping at night, constipation, mood swings and depression, and difficulty with short-term memory or feel confused.