Relationship between aVR T wave shape of electrocardiogram and the degree of coronary artery lesions in patients with ST-segment elevation myocardial infarction
YAN Jiesong ZHOU Dong TANG Xiangrui GUO Hongyi ZHAO Kuan
Department of Internal Medicine Cardiovascular, 3201 Hospital Affiliated to Medical College of Xi′an Jiaotong University, Shaanxi Province, Hanzhong 723000, China
Abstract:Objective To study the relationship between the aVR T wave shape of electrocardiogram and the degree of coronary artery lesions in patients with ST-segment elevation myocardial infarction. Methods One hundred and seven patients with ST-segment elevation myocardial infarction treated in 3201 Hospital Affiliated to Medical College of Xi′an Jiaotong University from January 2016 to January 2019 were divided into group A (positive electrocardiogram aVR T wave shape, 41 cases) and group B (non-positive electrocardiogram aVR T wave shape, 66 cases) according to the different electrocardiogram aVR T wave shape at admission. The basic data, the level of each laboratory examination index and the number of coronary artery lesion of two groups were compared. Logistic regression analysis was used to analyze the positive influence factors of aVR T wave shape. Results Left ventricular ejection fraction (LVEF) of group A was lower than that of group B, while the serum brain natriuretic peptide (BNP) and troponin I (cTnI) levels of group A were higher than those of group B (P < 0.05). There was significant difference in the total number of coronary artery lesions between two groups (P < 0.05). Logistic regression analysis showed that LVEF (OR = 0.337, 95%CI: 0.173-0.656) was the protective factor of aVR T wave postive in patients with ST-segment elevation myocardial infarction (P < 0.05), while BNP (OR = 1.715, 95%CI: 1.278-2.30), cTnI (OR = 1.535, 95%CI: 1.218-1.935), the multiple vessel lesions (OR = 2.275, 95%CI: 1.536-3.369) were the independent risk factors of aVR T wave postive in patients with ST-segment elevation myocardial infarction (P < 0.05). Conclusion aVR T wave positive is the risk factor of multi vessel lesions in patients with ST-segment elevation myocardial infarction. Close monitoring of aVR T wave can evaluate the degree of coronary artery lesions in patients with ST-segment elevation myocardial infarction.
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