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本文测定了３６例危重患儿疾病危重期及恢复期双份血总钙、游离钙（Ｃａ＋＋）、磷、镁、甲状旁腺激素（ＰＴＨ）、降钙素（ＣＴ）的浓度。结果显示危重期血总钙和（或）游离钙、镁、ＰＴＨ浓度降低，磷和ＣＴ浓度升高，表明危重患儿多伴有低钙血症，其部分原因为甲状旁腺受损功能低下，血磷因组织分解而升高，血镁降低及ＣＴ的升高。此外，部分患儿血总钙正常而Ｃａ＋＋却低下，提示Ｃａ＋＋测定更有临床意义。
The concentrations of total calcium, calcium (Ca ++), phosphorus, magnesium, parathyroid hormone (PTH) and calcitonin (CT) were measured in 36 critically ill children at critical and convalescent phases of disease. The results showed that serum total calcium and / or free calcium, magnesium and PTH concentrations were decreased and phosphorus and CT levels were increased during the critical period, indicating that most of the critically ill children had hypocalcemia, partly due to impaired parathyroid function , Phosphorus increased due to tissue breakdown, decreased blood magnesium and CT increased. In addition, some children with normal blood total calcium and Ca + + is low, suggesting that the determination of Ca + + more clinical significance.