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心肌单相动作电位(Monophasic Action Poten-tials,MAP)是在心导管或开胸手术中、利用吸引电极或接触电极导管从在体心内膜或心外膜表面上记录到的一群局部心肌细胞动作电位。它的问世,解决了玻璃微电极技术难于完成在体心脏心肌细胞动作电位测定的困难。根据Hoffman等在同一心脏上同时应用玻璃微电极和吸引电极记录TAP(跨膜
Monophasic Action Potentials (MAP) is a group of local cardiomyocytes that are recorded on the surface of the endocardium or epicardium using a suction or contact catheter in a cardiac catheterization or thoracotomy Potential. Its advent of the solves the glass microelectrode technology is difficult to complete in the cardiac cardiomyocyte action potential measurement difficulties. According to Hoffman et al., Simultaneous application of glass microelectrodes and aspiration electrodes on the same heart recorded TAP (transmembrane