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近来对阵发性房颤和房扑的紧急治疗重新引起了人们的关注。口服奎尼丁无效时尽管常常采用直流电作心脏复律,但日益增多的证据表明静脉注射Ic类抗心律失常药物对于阵发性房颤转复为窦性心律非常有效,对房扑无效,而此类药物的负性肌力与致心律失常作用也许与它们抑制心脏的传导作用有关。这种情况激起人们去寻求一种具有相
The recent emergency treatment of paroxysmal atrial fibrillation and atrial flutter has aroused people’s attention. Despite the frequent use of DC for cardioversion in the absence of oral quinidine, there is growing evidence that intravenous injection of anti-arrhythmic drugs of type Ic is very effective in converting sinus rhythm to paroxysmal atrial fibrillation and is not effective in atrial flutter Negative muscular and arrhythmic effects of these drugs may be related to their inhibition of cardiac conduction. This situation inspires people to seek a phase