Electrocardiographic Characteristics for the First Diagonal Branch of the Infarction Related Artery in Patients With Acute Myocardial Infarction
10.3969/j.issn.1000-3614.2015.07.010
- VernacularTitle:急性ST段抬高型心肌梗死患者梗死相关动脉为第一对角支的心电图特点
- Author:
Weijing WANG
;
Guowei ZHOU
;
Wenyi YANG
;
Guobing ZHANG
;
Weizhen LI
;
Hao XU
;
Yi WANG
;
Junli ZHAO
;
Shaowen LIU
- Publication Type:Journal Article
- Keywords:
Acute myocardial infarction;
Infarct-related artery;
Coronary angiography;
Electrocardiography
- From:
Chinese Circulation Journal
2015;(7):654-657
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To analyze the electrocardiographic (ECG) characteristics for the ifrst diagonal branch of infarction related artery (IRA) in patients with acute ST-segment elevation myocardial infarction (STEMI) in order to ifnd the rule for physician to make quick diagnosis. Methods: A total of 28 STEMI patients with coronary angiography (CAG) confirmed first diagonal branch of IRA were retrospectively analyzed. The patients were treated in our hospital from 2005-01 to 2014-06 and their ECG changes at admission were studied for ST-segment elevation/depression and q wave, Q wave changes during the period of evolution at different leads in all patients. Results: CAG presented that there were 19/28 (67.9%) patients with single vessel disease, 13 (46.4%) with isolated diagonal lesion. From onset of chest pain to AMI graph shown on ECG was about 240 (252 ± 71) min in all patients. All 28 (100%) patients were with ST-segment elevation in lead aVL, 27 (96.4%) in lead I, and 15 (55.6%) patients with ST-segment elevation by (0.5-1.0) mm. The incidence of ST-segment elevation in the chest lead was, in turn as 21 (75.0%) patients in lead V2, 16 (57.1%) in lead V3 and 12 (42.9%) in lead V1respectively; while ST-segment depression was as 28 (100%) patients in lead III, 27 (96.4%) in lead aVF and 22 (78.6%) in lead II respectively. During the period of evolution, the most q wave or Q wave formation were, in turn as 22 (88.0%) patients in lead aVL, 10 (40.0%) in lead V2, 9 (36.0%) in lead V3 and 7 (28.0%) in lead I respectively. Conclusion: The ECG changes in STEMI patients with diagonal branch of IRA have the high prevalence of ST-segment elevation in lead aVL and lead I, while there is an important feature that the ST-segment elevation < 1 mm in about half amount of relevant patients.
