单支冠状动脉疾病中Aqrs、At及心室梯度的临床意义

Clinical significance of Aqrs, At and ventricular gradient in single vessel coronary artery diseases.

作者信息

Motomura M, Ohbayashi Y, Hashimoto K, Furukawa T, Itoh M, Mitsunami K, Kinoshita M, Bito K

机构信息

First Department of Internal Medicine, Shiga University of Medical Science, Japan.

出版信息

Jpn Circ J. 1989 Dec;53(12):1491-6. doi: 10.1253/jcj.53.1491.

DOI:10.1253/jcj.53.1491

PMID:2632818

Abstract

Deflection area vectors of QRS (Aqrs) and T (At) and ventricular gradient (G) calculated from vectorcardiographic leads were compared in single vessel coronary artery diseases divided into subgroups of normokinetic, hypokinetic and akinetic by left ventriculography. In the LAD group, Aqrs shifted posteriorly, At were smaller and shifted to the right and G were smaller and shifted posteriorly or to the right. In the RCA group, Aqrs were smaller and shifted upwards, At shifted upwards and G were smaller and shifted upwards. In the LCx group, Aqrs shifted upwards, At shifted anteriorly and upwards and G were smaller and shifted upwards. Decreased magnitude and directional change of G reflect the severity and location of myocardial damage.

摘要

通过左心室造影将单支冠状动脉疾病分为正常运动、运动减弱和无运动亚组，比较了从心电向量图导联计算出的QRS波（Aqrs）和T波（At）的偏转面积向量以及心室梯度（G）。在左前降支（LAD）组中，Aqrs向后移位，At较小且向右移位，G较小且向后或向右移位。在右冠状动脉（RCA）组中，Aqrs较小且向上移位，At向上移位，G较小且向上移位。在左旋支（LCx）组中，Aqrs向上移位，At向前并向上移位，G较小且向上移位。G的幅度降低和方向改变反映了心肌损伤的严重程度和位置。