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急性心肌梗塞是冠状动脉血液供应急剧减少或中断,使相应的心肌严重而持久性缺血,导致坏死。1.临床表现 50％～80％病人有先兆,在发病前数日有心悸、气短、烦躁等前驱症状,随即出现频繁心绞痛,疼痛剧烈、持续时间长,用硝酸甘油
Acute myocardial infarction is a drastic reduction or interruption of coronary blood supply, causing severe and persistent ischemia of the corresponding myocardium leading to necrosis. 1. Clinical manifestations of 50% to 80% of patients have aura, a few days before the onset of palpitations, shortness of breath, irritability and other prodromal symptoms, frequent angina immediately followed by severe pain, sustained a long time, with nitroglycerin