The mechanism and effect of pituitrin on monophasic action potential (MAP) were studied using the technique for recording MAP from epicardium in the closed-chest state in rabbits.

• 用保持家兔处于闭胸状态记录心外膜心肌单相动作电位(MAP)的技术,研究垂体后叶素(Pt)对MAP的影响及机理。