心电图T波异常在心绞痛诊断中的临床价值

Clinical correlation between the abnormal electrocardiographic T waves and angina stability in patients with coronary artery disease

目的:通过160例冠心病心绞痛病例的数据分析,探究心电图T波异常在冠心病心绞痛诊断中的临床价值。方法:选取我院心内科病房住院,行心电图、冠状动脉造影检查确诊为不稳定型心绞痛和稳定型心绞痛的患者各80例,观察患者心电图T波,比较冠状动脉造影结果,分析在冠状动脉不同狭窄程度下T波异常的情况。结果:(1)不稳定型心绞痛组心电图中T波倒置和T波低平的比例明显高于稳定型心绞痛组(P<0.012 5);(2)不稳定型心绞痛组冠状动脉狭窄的严重程度明显高于稳定型心绞痛组(P<0.001);(3)T波异常的发生与冠状动脉狭窄的严重程度正相关。结论:在冠心病心绞痛患者,心电图T波异常在不稳定型心绞痛中更多见,可能与其冠状动脉狭窄严重程度相关。

Objective： To explore the clinical correlation between the patterns of abnormal electrocardiographic T wave and angina stability in patients with coronary artery disease. Methods： One hundred and sixty patients diagnosed with stable（n =80） and unstable angina pectoris（n =80） were selected in this study, and their electrocardiographic and coronary angiographic images were used for data analysis. All the patients were randomly selected from our hospital database. The abnormal T wave patterns in patients with varying extent of coronary stenosis were categorized based on our standard protocol. Results： Compared to that of stable angina, patients with unstable angina showed higher frequency of inverted or low-amplitude T wave （P 〈 0. 012 5 ）. Coronary stenosis was more severe in patients with unstable angina（ P 〈 0.001 ）. There was a positive correlation between the frequency of T wave abnormality and the severity of coronary stenosis. Conclusion： T wave abnormality is more frequently found in unstable angina patients with coronary artery disease ,which is possibly due to the deteriorated coronary artery stenosis.