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| Correlation between T-Wave Changes in Lead aVL on Electrocardiogram and Degree of Coronary Artery Stenosis in Patients with Stable Angina Pectoris |
| ZHAI Haijie |
| Luohe Central Hospital,Luohe Henan 462300 |
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Abstract 【Objective】To investigate the correlation between T-wave changes in lead aVL on electrocardiogram (ECG) and the degree of coronary artery stenosis in patients with stable angina pectoris. 【Methods】 The clinical data of 90 patients with stable angina pectoris admitted to our hospital from May 2018 to May 2021 were retrospectively analyzed. Based on prognosis, the patients were divided into a good prognosis group (n=60) and a poor prognosis group (n=30). General data and serum markers [cardiac troponin I (cTnI), high-sensitivity C-reactive protein (hs-CRP), brain natriuretic peptide (BNP), and creatine kinase-MB (CK-MB)] were compared between the two groups. The degree of coronary artery stenosis was compared among patients with different T-wave changes in lead aVL. Multivariate logistic regression analysis was used to identify independent risk factors for poor prognosis. 【Results】The proportions of T-wave changes in lead aVL, ST-segment elevation, pathological Q waves, and coronary artery stenosis were significantly higher in the poor prognosis group than in the good prognosis group (P<0.05). Logistic regression analysis showed that T-wave changes in lead aVL, ST-segment elevation, pathological Q waves, and coronary artery stenosis were all risk factors for poor prognosis in patients with stable angina pectoris (P<0.05). Based on T-wave changes in lead aVL, patients were further divided into a T-wave change group and a no T-wave change group. The degree of mid-segment stenosis in the left anterior descending artery was significantly higher in the T-wave change group than in the no T-wave change group (P<0.05).【Conclusion】 T-wave changes in lead aVL, ST-segment elevation, pathological Q waves, and coronary artery stenosis are risk factors for poor prognosis in patients with stable angina pectoris. Moreover, T-wave changes in lead aVL can predict the degree of mid-segment stenosis in the left anterior descending artery.
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Received: 13 July 2024
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2025, Vol. 42 
