动态心电图一过性ST段抬高对变异性心绞痛冠脉病变的诊断价值

Value of temporary ST elevation in dynamic electrocardiography for diagnosising coronary stenosis complicated with variable angina

目的:通过动态心电图观察一过性ST段抬高对变异性心绞痛冠脉病变的诊断价值。方法;对28例动态心电图有一过性ST段抬高患者行冠状动脉造影检查。结果:28例变异性心绞通患者中,冠脉造影检查示冠状动脉伴有意义狭窄者共26例,其中狭窄>75％者达19例(占68％);>75％狭窄者:ST段抬高在>0.2 mV,≤0.2 mV者中分别占85％(17/20),25％(2/8),二者差异显著(P<0.05);在ST段抬高最长持续叶间<3分钟者,≥3分钟者中分别占36％(4/11),88％(15/17),二者差异显著(P<0.05)。结论:变异性心绞痛更易于在有病变的冠状动脉上发生,当冠脉痉挛发生时,ST抬高的时间、高度与冠脉狭窄的程度呈正相关。

Objective: To study the value of ST elevation in dynamic electrocardiography in diagnosising coronary stenosis complicated with variable angina (VA). Methods: Study the data of DCG and coronary artery angiography (CAG) in 28 cases with paroxysmal ST elevation in dynamic electrocardiography. Results: There are 26 patients who have significance stenosis of coronary artery through CAG in 28 patients. There were 19 cases stenosis of ≥75%; The percent of ST elevation ≤0.2 mV, >0.2 mV occurred cases whose coronary stenosis of >75% was 25%, 85% respectively (P<0.05). The percent of ST elevation persisting time of <3 min,≥3 min occurred cases whose coronary stenosis of >75% was 36%, 88% respectively (P<0.05) Conclusion: The variable angina is feasible to happen in cases with coronary artery stenosis and the persisting time and extent of ST elevation is related with stenosis degree of coronary artery.