title: New questions about a popular heart procedure.  Research finds that angioplasty is used on those who may not need it.
mesh_terms: D000800:Angioplasty, Balloon / Q000706:statistics & numerical data*; D003324:Coronary Artery Disease / Q000628:therapy*; D019317:Evidence-Based Medicine; D006304:Health Status; D006801:Humans; D018579:Patient Selection; D018570:Risk Assessment; D012307:Risk Factors; D019564:Unnecessary Procedures