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急性下壁心肌梗塞时,在梗塞部位心电图呈ST段抬高的同时常伴有对应导联ST段的压低,过去认为这种ST段的压低系下壁导联ST段抬高在前壁导联的镜面投影.然而,晚近的研究发现这种对应性ST段改变可能反映远离或邻近梗塞部位的心肌缺血与心肌梗塞的面积大小,并发症的多少呈正相关.有对应性ST段压低者较无ST段压低者心功能差.梗塞面积大,并发症多和死亡率高.本文仅就急性下壁心肌梗塞及下壁合并右室梗塞的早期心电图对应导联ST段下降的临床意义进行初步探讨.
Acute inferior myocardial infarction, ST-segment elevation in the infarction site ECG is often accompanied by the corresponding lead ST segment depression, in the past that the ST segment depression under the lead ST segment elevation in the anterior wall guide However, recent studies have found that this correspondence ST segment changes may reflect myocardial infarction distant or adjacent infarction area and myocardial infarction size, the number of complications was positively correlated with corresponding ST-segment depression Compared with non-ST-segment depression, heart function is poor, with large infarct size, multiple complications and high mortality.This article only on acute inferior myocardial infarction and inferior wall merger with right ventricular infarction early ECG corresponding ST segment descending clinical significance Preliminary discussion.