论文部分内容阅读
低血镁的病人越来越被国内外学者所重视。现结合我院所遇病例,参考有关文献,就低血症问题进行讨论。一、镁的代谢与生理作用镁是人体内重要的阳离子,参与人体多种生理和生化功能。体重70公斤的成年人,体内镁含量平均为20～30克,亦即1,667～2,400mEq,其中约60％存在骨胳内。在肌肉、心肝、胰内的镁含量各约16mEq/Kg,其中心肌镁可高达17.4～19.8mEq。正常血清镁为1.5～2.5mEq/L。食物中的镁主要在小肠吸收,体内镁主要从肾脏排泄。镁的生理作用:(1) 镁与细胞内许多重要成份,如与ATP形成复合物,激活较多重要酶类,如胆硷脂酶,磷酸酶、羧化酶、硷性磷酸酶、三磷酸腺苷酶等。对糖、蛋白质中间代谢和神经肌肉应激性起调节作用。(2) 镁可引起周围血管扩张,小剂量应用发
Patients with hypomagnesemia are increasingly valued by scholars at home and abroad. Now combined with the cases encountered in our hospital, with reference to the literature, to discuss the issue of hyponatremia. First, the metabolic and physiological role of magnesium Magnesium is an important cation in the human body, involved in a variety of human physiological and biochemical functions. Adults weighing 70 kg have an average magnesium content of 20 to 30 grams, or 1,667 to 2,400 mEq, of which about 60% are present within the bones. In the muscle, heart and liver, pancreas within the magnesium content of about 16mEq / Kg, of which myocardial magnesium up to 17.4 ~ 19.8mEq. Normal serum magnesium 1.5 ~ 2.5mEq / L. Magnesium in food is mainly absorbed in the small intestine, and magnesium is mainly excreted from the kidneys in the body. Physiological role of magnesium: (1) Magnesium and many important intracellular components, such as complexes with ATP, activate more important enzymes such as cholinesterase, phosphatase, carboxylase, alkaline phosphatase, adenosine triphosphatase Wait. Median sugar, protein metabolism and neuromuscular stress play a regulatory role. (2) Magnesium can cause peripheral vasodilation, low-dose application of hair