Han Yan-Yan, Zhai Shu-Bo, Sun Jing-Hui, Nie Shu, Yin Fang-Ying
Department of Pediatric Cardiovascular, First Hospital of Jilin University, Changchun 130021, China.
Zhongguo Dang Dai Er Ke Za Zhi. 2011 Feb;13(2):135-7.
To study the ECG features in children with dilated cardiomyopathy (DCM), and related factors for the occurrence of arrhythmia secondary to DCM.
Data from 68 children with DCM from January 1998 to March 2011 were studied. The children were classified into three groups: severe arrhythmia (n=42), non-severe arrhythmia (n=20) and non-arrhythmia (n=6). Left ventricular end diastolic diameter (LVED), left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) were compared.
Abnormal ECG results were found in all of the 68 children with DCM. Sinus tachycardia (91%) and ectopic pulsatile (86%) were common. LVED in the severe arrhythmia group (74±6 mm) was greater than that in the non-severe arrhythmia group (65±4 mm; P<0.05) and non-arrhythmia group (61±3 mm; P<0.05). LVED in the non-severe arrhythmia group was also greater than that in the non-arrhythmia group (P<0.05). LVEF and LVFS in the severe arrhythmia group were (30±11)% and (22±4)%, respectively, which were lower than those in the non-severe arrhythmia group［(37±12)% and (28±5)%, respectively］and non-arrhythmia group［(45±9)% and (34±7)%, respectively］(P<0.05). There were also significant differences in the LVEF and LVFS between the non-severe arrhythmia and non-arrhythmia groups (P<0.05).
The common abnormal ECG findings are sinus tachycardia and ectopic pulsatile in children with DCM. Arrhythmia is one of the main clinical manifestations of DCM. The occurrence of arrhythmia is associated with the left ventricular size and heart function.
研究扩张型心肌病（DCM）患儿的心电图特征以及DCM继发心律失常的相关因素。
对1998年1月至2011年3月期间68例DCM患儿的数据进行研究。将患儿分为三组：严重心律失常组（n = 42）、非严重心律失常组（n = 20）和无心律失常组（n = 6）。比较左心室舒张末期内径（LVED）、左心室射血分数（LVEF）和左心室缩短分数（LVFS）。
68例DCM患儿的心电图结果均异常。窦性心动过速（91%）和异位搏动（86%）较为常见。严重心律失常组的LVED（74±6 mm）大于非严重心律失常组（65±4 mm；P<0.05）和无心律失常组（61±3 mm；P<0.05）。非严重心律失常组的LVED也大于无心律失常组（P<0.05）。严重心律失常组的LVEF和LVFS分别为（30±11）%和（22±4）%，低于非严重心律失常组［分别为（37±12）%和（28±5）%］和无心律失常组［分别为（45±9）%和（34±7）%］（P<0.05）。非严重心律失常组和无心律失常组之间的LVEF和LVFS也有显著差异（P<0.05）。
DCM患儿常见的心电图异常表现为窦性心动过速和异位搏动。心律失常是DCM的主要临床表现之一。心律失常的发生与左心室大小和心功能有关。
