用吸引电极记录人和动物在体心脏的单相动作电位(MAP),虽可获得心肌细胞群电活动的某些信息,但由于吸引电极对心肌细胞的损伤,因而限制了临床应用。本文介绍用接触电极导管代替吸引电极记录MAP的方法。对接触电极的制备、实验程序、MAP的形态、测量、特征以及应用价值均作了简要说明。 Recording the single-phase action potential (MAP) of the human and animal body’s heart with a suction electrode can obtain some information about the electrical activity of the myocardial cell group, but the clinical application is limited due to the damage of the cardiac muscle cell by the suction electrode. This article describes a method of recording MAP with a contact electrode catheter instead of a suction electrode. The preparation of contact electrode, experimental procedure, MAP morphology, measurement, characteristics and application value are briefly described.