I'm on a medication which a person must not take if they have Ischaemic heart disease, so it has all been checked out by my cardiologist and other specialists that I do not have ischaemic heart disease. I do have a prosthetic valve because I did have bicuspid aortic valve but cardiologist and the other specialists specifically wrote in reports that I do not have heart disease but rather a heart defect, now corrected with prosthetic valve. So the answer to your question, guest, is that a valve defect/replacement is not ischaemic heart disease. Ischaemic heart disease is atherosclerosis, that is coronary plaque. You might have the same medications but it's not the same !
PS Of course a person can have both a heart defect/replacement valve and ischaemic heart disease !