Merger proposal 
I propose that angioplasty be merged with this article, though this could admittedly go either way as far as article titles go  angioplasty seems more general, but that article is less well developed, as well as less frequently edited, so in contravention of the wikipedia:Merge guidelines i am posting the proposal here first, as the target article. (it is unclear to me whether angioplasty is in fact a synonym of PCI based on the literature but that is the impression this article gives.) it seems like the angioplasty article could be cleaned up and integrated here, making this article more informative overall.