Is that angioplasty really necessary? In the throes of a heart attack, artery-opening angioplasty is a lifesafer. The same can't be said when it's done to open a narrowed heart artery that isn't causing problems.
D000787:Angina Pectoris / Q000209:etiology / Q000628:therapy*; D015906:Angioplasty, Balloon, Coronary / Q000706:statistics & numerical data*; D003324:Coronary Artery Disease / Q000150:complications / Q000628:therapy*; D006801:Humans; D019564:Unnecessary Procedures / Q000706:statistics & numerical data*