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探讨小儿扩张型心肌病(DCM)发生心律失常与Q-T离散度(QTd)的关系。准确测得QTd37例,分为两组:组1伴有室性心律失常(14例),组2伴有室上性心律失常或无心律失常(23例),组3系健康对照(21例)。结果:组1比组2或组3的QTd更长,具有显著性差异(P<0.05);组2与组3比较无显著差异(P>0.05)。提示小儿DCM时测QTd值有预测是否发生室性心律失常的价值,QTd越大,越易发生室性心律失常。
To investigate the relationship between arrhythmia and Q-T dispersion (QTd) in children with dilated cardiomyopathy (DCM). QTd was accurately measured in 37 cases and divided into two groups: group 1 with ventricular arrhythmia (group 14), group 2 with supraventricular arrhythmia or no arrhythmia (group 23), group 3 (21 ). Results: Compared with group 2 or group 3, group 1 had longer QTd (P <0.05). There was no significant difference between group 2 and group 3 (P> 0.05). Prompt pediatric DCM measured QTd values predict the occurrence of ventricular arrhythmia value, QTd the greater the more prone to ventricular arrhythmias.