bradycardia

Atropine (DL-Hyoscyamine) 是竞争性的毒蕈碱乙酰胆碱受体拮抗剂，有抗近视效果。它是一种从颠茄植物中分离出来的天然生物碱，可阻断乙酰胆碱对心率和收缩力的抑制作用。

Atropine sulfate (Sulfatropinol) 是一种竞争性的毒蕈碱乙酰胆碱受体拮抗剂。

Cyclobuxine D is a steroidal alkaloid extracted from Buxus microphylla. Cyclostatin D has obvious bradycardia effect on rat heart, and inhibits acetylcholine and Ba ++ induced longitudinal muscle contraction isolated from rabbit jejunum.

Lycorenine may produce a decrease in blood pressure as the result of alpha-adrenergic blockade in conjunction with the reduction of the spontaneous sympathetic nerve activity, and produce bradycardia by modifying vagal activity. The development of tachyph