Conclusion It is effective and safe that temporary cardiac pacing treat malignant rapid ventricular arrhythmia caused by long interval dependent ventricular extrasystole.

结论临时心脏起搏救治长间歇依赖室早诱发的恶性快速性室性心律失常安全有效。

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Methods The transesophageal pacing was performed in 39 children with prolonged pr interval (study group) and 141 children with normal pr interval (control group).

方法对39例PR间期延长(研究组)和141例PR间期正常(对照组)患儿房室传导功能进行了经食道心房调搏研究。

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The surface body electrocardiogram(ECG) manifestations of biatrial pacing are that P wave duration shortens, the polarity of P wave changes to negative, PR interval gets shorter correspondingly.

双房同步起搏体表心电图表现为P波时限短、负向或正负双向，PR间期相应缩短。

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