No benefit for late angioplasty after a heart attack. Opening a blocked coronary artery immediately after a heart attack pays off; doing it after a day or so doesn't.
D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects*; D023921:Coronary Stenosis / Q000150:complications / Q000628:therapy*; D006801:Humans; D009203:Myocardial Infarction / Q000209:etiology / Q000628:therapy; D018919:Neovascularization, Physiologic; D013997:Time Factors