结果表明,10μmol/L ACh可缩短心房肌、心室肌动作电位的时程（action potential duration,APD）。心房肌APD在给药前后分别为208。
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...去极化开始到3期复极化 完毕的这段时间，就是整个动作电位的时程（actionpotentialduration， APD）。心室肌细胞动作电位的时程约为200—300ms。 （5）4位相：静息期，也称电舒张期。
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心室肌动作电位的时程 action potential duration ; APD
目的：研究自发性高血压大鼠（SHR）左心室肌细胞动作电位时程延长的膜离子流基础。
Objective: To study the membrane ionic basis of action potential prolongation of hypertrophied left ventricular myocytes in spontaneously hypertensive rats (SHR ).
方法应用全细胞膜片钳技术记录乌头碱对大鼠心肌细胞动作电位时程的作用，分别给予奎尼丁、维拉·帕米处理比较二者对动作电位时程的影响。
Methods Effects of quinidine and verapamil on the alteration of action potential duration induced by aconitine were studied by use of the whole cell patch clamp techniques in rat ventricular myocytes.
结果：心衰康煎液可以明显延长刺激引起动作电位的潜伏期及明显缩短动作电位时程。
Results: Xinshuaikang decoction could prolong the latent period of AP induced by electrical stimulation and shorten the APD Jignificantly.
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