Aim: To ascertain the diagnostic accuracy and clinical efficacy of vector-cardiography(VCG) for diagnosing conduction block in left forearm(LAFB).
目的：探讨心电向量图（VCG）诊断左前分支传导阻滞（LAFB）的准确性及临床应用价值。
Main change types of ECG in children with epilepsy were atrial premature (9.4%), ST-T change (5.9%), conduction block (5.9%) and ventricular premature beat (4.7%).
癫痫患儿心电图改变以房性早搏(9.4%)、ST - T改变(5.9%)、传导阻滞(5.9%)、室性早搏(4.7%)为主。
For differentiating conduction block from temporal dispersion, the 95% normal upper limits of CMAP decay over different nerve segments is recommended for a definite partial conduction block.
考虑到时间离散的影响因素，建议将CMAP波幅衰减大于相应神经节段95%正常上限值诊断为肯定的部分性运动神经传导阻滞。
The ECG abnormalities were commonly sinus bradycardia, ST-T changes, and myocardial ischemia while others mainly included premature beat, arrhythmia, conduction block, abnormal Q waves, and so on.
窦性心动过缓、ST-T改变、心肌缺血最常见，其他异常主要有早搏、心律不齐、传导阻滞、异常Q波、Q-T 间期延长等改变。
Conclusions Understanding the reasons and mechanisms of QRS wave diversity in escape beat and escape rhythm is of great reference value for the evaluation, diagnosis of all kinds of conduction block.
结论确定QRS波形态多变的逸搏及逸搏心律的形成原因，对于评价各种传导障碍的性质及临床诊治具有重要的参考价值。
Conclusions Understanding the reasons and mechanisms of QRS wave diversity in escape beat and escape rhythm is of great reference value for the evaluation, diagnosis of all kinds of conduction block.
结论确定QRS波形态多变的逸搏及逸搏心律的形成原因，对于评价各种传导障碍的性质及临床诊治具有重要的参考价值。
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