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镁是人体内重要的阳离子,参与人体的多种生理和生化功能。体重70公斤的成年人体内镁含量为 20～28g 即1667～2400mEq,其中约60%存于骨内,在肌肉、肝、心和胰内的镁含量各约为16mEq/kg,正常血清镁为1.5～2.5mEq/l。低血镁的原因缺镁意味着机体内镁总量减少,在临床上,缺镁主要是因为镁从尿液和粪便中丢失过多或肠吸收障碍所致。在癌症病人,因不能把镁加进静脉补液以及使用羧苄青霉素和二性霉素 B 引起肾小
Magnesium is an important cation in the human body and participates in various physiological and biochemical functions of the human body. The body weight of 70 kg of magnesium in adults is 20 ~ 28g or 1667 ~ 2400mEq, of which about 60% of the bone is stored in the muscle, liver, heart and pancreas within the magnesium content of about 16mEq / kg, normal serum magnesium 1.5 ~ 2.5mEq / l. The cause of hypomagnesemia Magnesium deficiency implies a reduction in the total amount of magnesium in the body. In clinical practice, magnesium deficiency is mainly due to excessive loss of magnesium from urine and excrement or intestinal absorption disorders. In cancer patients, due to can not add magnesium to intravenous rehydration and use of carbenicillin and amphotericin B cause kidney