Coronary artery blockage

My father was told he has 100% blockage in his right coronary artery and 20% in his left coronary artery. The doctor told him there is nothing they can do for either artery. I understand the 100% but can't they give him a medication to help the 20%?  He has already had a stock and is in a nursing home right now well the 20% or 100% make him have another one?

[kenkeith]

A 100% blockage would be fatal if there were not collateral vessels that feed a blood supply to the deficit area...the RCA may not be a problem  It is almost always never recommended to intervene for blockage that is less than 70% as usually it is not problematic....the problem would be angina (chest pain) due to ischemia (lack of blood supply) to the area in question if there were a problem..  










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