<s>[INST] My father 67 years old chronic smoker had chest pain on 7th may was admitted to hospital after initial treatment his tests were satisfactory ...Echo report indicated blockage and when after 1 month angiogram test is done 3 artries are foun blocked 80%, 80% and 90%. Doctor advised CABG. what is this and how good it is on 67 years old fragile elder and is it very costly? and what are the risks? PGI in India ... is it good for such surgeries? [/INST] Thanks for your question on Chat Doctor. Your father is ideal candidate for CABG (Coronary Artery Bypass Grafting). Any patient with triple vessel disease should go for CABG. So you must get done CABG. In this procedure the blocked arteries are bypassed by veins or arteries. Veins used are anterior tibial vein, popliteal vein. And the best is internal mammary artery. It is now considered as less risky procedure as more and more expertise has been achieved.  So you should not worry much. And PGI is good institute. So get done there. The cost will be around 1.5 to 2 lakhs. </s>