Results showed that long _ cycle leading to atrial fibrillation and flutter were mostly compensating period due to atrial premature beat or obviously sinus bradycardia.
结果显示：心房颤动或心房扑动发生前的长周期多见于房性期前收缩后代偿间歇及明显窦性心动过缓等心律失常；
In them, sinus tachycardia, myocardial ischemia, atrial and ventricular premature beat were common.
其中以窦速、心肌缺血、房早和室早多见。
Conclusion: atrial overdrive can prevent AF, which may results from accelerating interatrial conduction, inhibiting atrial premature beat, eliminating sinus bradycardia and long short interval.
结论：心脏起搏抑制房颤发生的机制可能与快频率起搏加速心房内传导、抑制了房性期前收缩、消除了窦性心动过缓和心脏长短间歇有关。
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。
Results 141 patients morbidity rate of abnormal electrocardiogram was 65.25%. The morbidity of atrial premature beat in right cerebral haemorrhage group was more common(P<0.05).
结果141例脑出血伴发心电图异常率为65.25%，右侧脑出血组中房性早搏的发生率较高（P<0.05），脑干及小脑出血组中窦性心动过速发生率较高（P<0.05）。
The occurrence of fetal cardiac arrhythmia was 14 cases (16 % ), with the majority of atrial premature beat.
同时发现14例有心律紊乱占6％，房性早搏占多数。
The occurrence of fetal cardiac arrhythmia was 14 cases (16 % ), with the majority of atrial premature beat.
同时发现14例有心律紊乱占6％，房性早搏占多数。
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