变异型心绞痛的心电图特征

变异型心绞痛常见于冠脉正常或无严重冠脉狭窄的患者，本文主要探讨变异型心绞痛患者的心电图变化。变异型心绞痛常出现典型的心电图变化，近50％的患者出现高耸对称的 T 波，如果痉挛持续则出现进行性抬高的 ST 段，持续数分钟后逐步回落。与 ST 段抬高相关的心电图改变还包括 R 波增高和 S 波减小，部分病例出现 TQ 段斜率上升、ST 段抬高和 T波深倒置的电交替。除此以外，变异型心绞痛发作时易发生室性心律失常。

Electrocardiographic features of vasospastic angina

Vasospastic angina (VSA)is usually seen in patients with normal coronary artery or no severe coronary artery stenosis.This paper mainly focuses on the ECG changes of VSA patients. Typically ECG changes are usually observed in VSA patients.Peaked and symmetrical T waves ap-peared in the ECGs of nearly half of them;progressive elevating ST segment appeared if the spasm continued and then gradually fell down after a few minutes.The ECG changes associated with ST-segment elevation also included R-wave heightening and S-wave diminution;the rise of TQ-segment slope,and electrical alternations of ST-segment elevation and T-wave deeply inversion were observed in some cases.In addition,ventricular arrhythmia is usually accompanied with VSA.