Former President George W. Bush underwent an angioplasty this week, and the details sparked a public debate about the controversies of heart disease treatments. His spokesman stated that he underwent a routine physical exam and had no symptoms of heart disease. A stress test showed EKG changes and a CT angiogram found a blocked artery. He was transferred to another hospital and underwent an angioplasty, a procedure in which a stent (a wire mesh tube) is inserted into the blocked artery an...