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窦房结及房室结的功能受交感及副交感神经支配的平衡机理所影响。阿托品在一般剂量时是用作解除迷走神经张力,但在小剂量时却能减慢心率。本文估价不同剂量阿托品对人体窦房结及房室结的药理作用。鉴于房室传导受心率影响,故在心房调搏控制心率的病人中,观察阿托品对房室传导时间的影响。
The function of the sinus node and atrioventricular node is affected by the balance mechanism of sympathetic and parasympathetic innervation. Atropine at normal doses is used to relieve vagal tone, but in a small dose can slow down the heart rate. This article evaluates the pharmacological effects of different doses of atropine on the human sinoatrial node and atrioventricular node. In view of the impact of atrioventricular conduction by heart rate, so in atrial pacing control of heart rate in patients with observed atropine on the impact of atrioventricular conduction time.