title: I'm 69 and have stable angina, but I sometimes worry that I might be having a heart attack that mirrors a bout of angina.  How can I distinguish one event from the other?
mesh_terms: D054058:Acute Coronary Syndrome / Q000503:physiopathology*; D000368:Aged; D000787:Angina Pectoris / Q000503:physiopathology*; D000789:Angina, Unstable / Q000503:physiopathology*; D006801:Humans