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患者男性,17岁,因先天性心脏病、室间隔缺损而住院行室间隔修补术,术后第2天出现心律不齐而检查心电图(附图,见第172页)。附图上行为肢导联和V_1导联,QRS波群:I、aVL呈qRS型,Ⅱ、Ⅲ、aVF呈rS型伴S波挫折,RaVL>RⅠ,SⅢ>SⅡ,V_1呈R型并粗钝。各导联QRS波群宽均≥0.12s并伴有明显的终末部粗钝或挫折。电轴左偏,P-R间期延长约0.30s,诊断为不完全性三分支传导阻滞(完全性右束支传导阻滞、左前支阻滞,左后分支传导延缓)。下行Ⅱ导联呈室性早搏二联律,但早搏QRS形态也分2种,随着它前面QRS波群的形态不同而不同。窦性下传的第1、5、9、13个QRS波群呈rS型,并有S波挫折,QRS波群宽0.14s,P-R间期0.30s,这种QRS波群的形态与常规记录的Ⅱ导联完全相同,其后的室早呈QS型,时限比正常下传的更宽,
Male, 17 years old, hospitalized for interventricular septal defect due to congenital heart disease and ventricular septal defect, and arrhythmia on day 2 postoperatively (see page 172). In the figure, the upper extremity leads and V_1 lead, QRS complex: I, aVL showed qRS type, Ⅱ, Ⅲ, aVF showed rS type with S wave setback, RaVL> RⅠ, SⅢ> SⅡ, V_1 showed R type and coarse blunt. Each lead QRS complex width ≥0.12s and accompanied by a clear terminal blunt or setback. Left axis deviation, P-R interval extended for about 0.30s, diagnosis of incomplete three-branch block (complete right bundle branch block, left anterior branch block, delayed left branch of conduction). Downlink Ⅱ lead premature ventricular contractions law, but QRS morphology is also divided into two kinds of premature beats, with the QRS complex in front of it in different morphological different. The first, fifth, thirteenth and 13th QRS complexes of sinusoid were rS type with S wave setback, QRS wave group width 0.14s, PR interval 0.30s. The morphology and regular record of QRS complex Ⅱ leads exactly the same, followed by early QS-type room, the time limit is wider than normal,