Not all drug eluting stents are dissolving. Data on dissolving stents are still not clear and the rates of angioplasty with drug eluting stents have come down

Only a bio-absorbable stent will dissolve. Otherwise rest of the stents remain inside the body forever. You would ask your doctor which stent is used. Bio-absorbable stent are rarely used,and they are withdrawn from many countries including india due to some serious side effects of these. And you don't worry, drug eluting stent are good stents