Intracoronary beta-blocker before percutaneous intervention protects myocardium.
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D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage*; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects; D006321:Heart / Q000187:drug effects*; D006801:Humans; D007269:Injections, Intra-Arterial; D009203:Myocardial Infarction / Q000517:prevention & control*
D000319:Adrenergic beta-Antagonists