1、全球心肌梗死新定义1全球心肌梗死新定义2全球心肌梗死新定义3全球心肌梗死新定义4全球心肌梗死新定义5全球心肌梗死新定义6全球心肌梗死新定义7全球心肌梗死新定义8全球心肌梗死新定义9全球心肌梗死新定义10The earliest change histologically seen with acute myocardial infarction in the first day is contraction band necrosis.The myocardial fibers are beginning to lose cross striations and the nuclei are
2、not clearly visible in most of the cells seen here.Note the many irregular darker pink wavy contraction bands extending across the fibers.全球心肌梗死新定义11This is an intermediate myocardial infarction of 1 to 2 weeks in age.Note that there are remaining normal myocardial fibers at the top.Below these fibe
3、rs are many macrophages along with numerous capillaries and little collagenization.全球心肌梗死新定义12This high power microscopic view of the myocardium demonstrates an infarction of about 1 to 2 days in duration.The myocardial fibers have dark red contraction bands extending across them.The myocardial cell
4、 nuclei have almost all disappeared.There is beginning acute inflammation.Clinically,such an acute myocardial infarction is marked by changes in the electrocardiogram and by a rise in the MB fraction of creatine kinase.In this microscopic view of a recent myocardial infarction,there is extensive hem
5、orrhage along with myocardial fiber necrosis with contraction bands and loss of nuclei.全球心肌梗死新定义13全球心肌梗死新定义14全球心肌梗死新定义15全球心肌梗死新定义16全球心肌梗死新定义17全球心肌梗死新定义18全球心肌梗死新定义19全球心肌梗死新定义20全球心肌梗死新定义21全球心肌梗死新定义22全球心肌梗死新定义23全球心肌梗死新定义24心肌梗死前间隔及前壁心肌梗死 下壁心肌梗死 高侧壁心肌梗死 正后壁心肌梗死 心室除极顺序的改变 心室肥大急性心肌炎 生理性或位置性 束支阻滞预激心室肥厚正常人肺栓塞全球心肌梗死新定义25全球心肌梗死新定义26全球心肌梗死新定义27全球心肌梗死新定义28全球心肌梗死新定义29全球心肌梗死新定义30全球心肌梗死新定义31全球心肌梗死新定义32全球心肌梗死新定义33全球心肌梗死新定义34全球心肌梗死新定义35全球心肌梗死新定义36全球心肌梗死新定义37全球心肌梗死新定义38全球心肌梗死新定义39
