Whatever be your age, Go for optimised medial treatment. Surgical intervention is not required. take care of your risk factors, weight, diet blood pressure diabetes
stresses,get them in control by a good consultant in Internal medicine, not cardiologist who have invested crores in equipment and have to pay instalments of bank... don't expect honest opinion from such drs.... my father had above 90% blockages in all 3 arteries, no dr was ready for surgery due to age and risk, has lived 17 years on medicines taken regularly without failing a single dose. he is 101 now. bedridden for last 1 year , still seeing tv with remote in hand 12 hours a day ! IPC? ECP( external counter pusation ) can be good as further supplement if taken free of cost. use simple BP cuffs at home all by yourself.