Mg~(++)是重要的生命元素,在体内占阳离子的第四位;而在细胞内,其含量仅次于K~+。由于各种原因,如长期不适当地使用利尿剂,使尿中K~+排泄增加的同时,Mg~(++)的排泄也跟着增加;或者使用强心甙时由于该药能增加肾小球滤过并抑制肾小管对阳离子的重吸收,也使Mg~(++)的排泻增加;此外,由于Mg~(++)的摄入不足或消化道吸收障碍等,以上诸多因素均能引 Mg ~ (++) is an important element of life, accounting for the fourth in the body of the cation; in the cell, its content is second only to K ~ +. Due to various reasons, such as the long-term improper use of diuretics, urinary excretion of K ~ + increase, while excretion of Mg ~ (++) also increases; or when the use of cardiac glycosides can increase renal The ball filtration and inhibition of tubular reabsorption of cations, but also make Mg ~ (++) of the diarrhea increased; In addition, due to Mg ~ (++) or inadequate intake of digestive tract disorders, many of the above factors Can lead