心脏的规律性搏动主要由心脏的自律性细胞、兴奋传导系统和心肌细胞的收缩共同协调完成〔1〕,而心肌细胞的电生理特性—自律性、兴奋性、传导性和收缩性又受到细胞膜内外某些离子浓度的影响〔2〕,其中以钾、钠、镁、氯离子为主。本文重点研究天冬氨酸钾镁片即钾镁离子对心肌细 Cardiac regularity of the heart beat mainly by the self-regulation of cells, the conduction of excitement and contraction of cardiomyocytes co-ordination completed [1], and myocardial electrophysiological properties - self-discipline, excitability, conductivity and contractility by the cell membrane Inside and outside the impact of some ion concentrations 〔2〕, of which potassium, sodium, magnesium, chloride-based. This article focuses on aspartate potassium magnesium tablets that potassium and magnesium ions on the myocardial thin