把电极通入一个或多个心房或心室，并使导入一条大静脉，就可以通过有规律的小幅电击模拟窦房结发挥作用。
By inserting electrodes into one or more of the Chambers of the heart, via a large vein, it is possible to mimic its function by applying small electrical shocks at regular intervals.
静脉镁剂对心室率的影响以及心血管副作用不如钙拮抗剂或胺碘酮明显。
The effect of intravenous magnesium on the ventricular rate and its cardiovascular side effects are less significant than other calcium antagonists or amiodarone.
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.
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