Conclusion Fetal arrhythmias without CHD or hydrops under close monitoring often have good clinical outcome, while fetal bradycardia is associated with a high mortality rate.

结论大部分阵发性心律失常胎儿在严密监护保守治疗下，胎儿预后良好，胎儿心动过缓预后较差。

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Conclusion Fetal arrhythmias without CHD or hydrops under close monitoring often have good clinical outcome, while fetal bradycardia is associated with a high mortality rate.

结论大部分阵发性心律失常胎儿在严密监护保守治疗下，胎儿预后良好，胎儿心动过缓预后较差。

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