Kamakura S
Department of Internal Medicine, National Cardiovascular Center.
Nihon Rinsho. 1995 Jan;53(1):98-105.
To investigate the ventricular activation process reflected on body surface maps, we compared body surface isopotential and isochrone maps with epicardial isochrone maps in 39 patients with Wolff-Parkinson-White syndrome. The epicardial earliest activation site, the latest activation site and the distribution of isochrone line during mid QRS period were reflected well on the location of minimum during early QRS period, the location of maximum during terminal QRS period, and the movement of base line during mid QRS period on isopotential maps respectively. Right ventricular breakthrough via normal conduction pathway was recognized on epicardial maps in most patients with left sided or septal accessory pathway, though some patients had it on isopotential maps and a few patients had it on isochrone maps. The unique distribution of initial minimum in patients with posteroseptal pathway was caused by the ventricular fusion of the preexcitation at diaphragmatic base and the normal activation at right ventricular free wall.
为了研究体表电位图所反映的心室激动过程，我们对39例预激综合征患者的体表等电位图和等时线图与心外膜等时线图进行了比较。心外膜最早激动部位、最晚激动部位以及QRS波群中期等时线的分布，分别很好地反映在体表等电位图的QRS波群早期最小值部位、QRS波群终末最大值部位以及QRS波群中期基线的移动上。大多数左侧或间隔旁道患者在心外膜图上可识别出经正常传导途径的右心室激动突破，尽管有些患者在体表等电位图上可识别，少数患者在等时线图上可识别。后间隔旁道患者初始最小值的独特分布是由膈肌底部预激与右心室游离壁正常激动的心室融合所致。
