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镁是体内重要的阳离子,仅次于钙、钠、钾。镁主要存在于细胞内,是细胞内仅次于钾的阳离子。已证实,三大物质代谢,许多酶的活性,能量的产生,离子的转运,神经肌肉兴奋性的调节,以及脱氧核糖核酸、核糖核酸的合成,都需要镁离子的参与。镁对心肌结构的完整和工作性能的正常亦起十分重要的作用。它主要使线粒体保持完整,并依靠它才能保钾。Heggtveit等做尸检均发现死亡后心肌镁含量降
Magnesium is an important cation in the body, second only to calcium, sodium and potassium. Magnesium is mainly found in cells and is the second most intracellular cation of potassium. It has been demonstrated that the three major metabolites of matter, the activity of many enzymes, the generation of energy, the transport of ions, the regulation of neuromuscular excitability, and the synthesis of deoxyribonucleic acid and ribonucleic acid all require the participation of magnesium ions. Magnesium also plays a very important role in the integrity of myocardial structure and normal performance. It mainly keeps mitochondria intact and relies on it for potassium retention. Heggtveit and other autopsy found dead myocardium after magnesium decreased