目的：比较五种常用药物组合对慢性房颤患者静息及活动状态下心室率的控制作用。

Objective: We compared the effects of five pharmacologic regimens on the rest and exercise-induced changes of ventricular rate (VR) of patients with chronic atrial fibrillation (CAF).

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记录静息及被动运动时视觉模拟评分(VAS)、肌力分级、镇静程度及副作用发生情况。

Visual analogue score (VAS) during rest and movement, muscle strength grades, sedation level and complications were recorded.

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If that protein is an enzyme then you've and you've switched it from an 'off' position where it's not catalyzing a reaction to an 'on' position where it is, you've changed the biochemical state of the cell, you've changed the chemical reactions that can occur within the cell, and you've changed its behavior.

如果这种蛋白是一种酶的话,你就能够将酶从无催化作用的静息态,激活至能催化反应的激活态,你改变了细胞的生化状态,也改变了细胞内发生的化学反应,改变了细胞的行为

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