目的：评价房颤急性发作时静脉镁剂在转复窦性心律、降低心室反应和心动过缓风险方面的作用。
Objectives: to assess the effects of intravenous magnesium on converting acute onset atrial fibrillation to sinus rhythm, reducing ventricular response and risk of bradycardia.
在12个月时，93%的消融患者和35%的药物治疗患者未出现房颤。
Overall, at 12 months, 93% of ablation patients and 35% of the drug patients were free of atrial tachyarrhythmias.
结果发现房颤患者心室反应有其一定的昼夜节律，在凌晨4 时至5时达谷值，于上午10 时至11时达峰值。
Results The diurnal disfribution of ventricular response in patients with AF showed a regular circadian variation, The trough of heart rate were from 4Am to 5Am and peak at 10Am to 11Am.
房颤发作时采用普通电生理导管及消融导管在冠状窦与右心耳间放电。
When AF occurs, one common electrophysiological catheter and one ablation catheter with a 4 mm tip electrode were used to discharge between coronary sinus and right auricle.
房颤时左房内可见明显异常的血流淤滞，在超声下有自发的异常显影；
Abnormal changes in flow are evident by stasis in the left atrium, and seen as spontaneous echocontrast.
房颤时左房内可见明显异常的血流淤滞，在超声下有自发的异常显影；
Abnormal changes in flow are evident by stasis in the left atrium, and seen as spontaneous echocontrast.
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