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:Myocardial infarction is necrosis of myocardial tissue which occurs as a result of a deprivation of blood supply, and thus oxygen, to the heart tissue. Blockage of blood supply to the myocardium is caused by occlusion of a coronary artery.
;the heart was enlarged--weighing 675 grams--especially the left atrium
;530 grams
;410 grams