[Pathologic features of conduction system in myocardial infarction].
Coronary artery disease and myocardial infarction are frequently associated with major conduction abnormalities, but the correlation between the vascular disease and the specific conduction system is not obvious. Anyhow, in cases of acute occlusive vascular disease, the correlation might be more obvious. 31 cases of acute coronary arterial occlusion with myocardial infarction were studied correlating with ECG changes as well as pathologic lesions present in the conduction system. Results showed that histologic changes of the conductive system were usually related with the condition of blood supply and the site and size of the infarction. Additionally, the area of the damaged conductive tissue should be large enough to produce ECG changes. Otherwise the functional changes might be compensated or recovered. Myofibrillar degeneration was obtained in the conduction tissue in the majority of the cases reported, and its clinical significance remains to be clarified.
Zhu
Q Y
QY
General Hospital of Nanjing military region, PLA.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003324:Coronary Artery Disease / Q000150:complications / Q000473:pathology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000473:pathology*