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- W2040433663 abstract "We studied the hypotheses that serum calcium and blood ionized calcium would be low in acutely ill children and would rise with clinical improvement. In 15 children admitted to the pediatric intensive care unit, the blood ionized calcium level was 4.45±0.06 mg/dl (1.11±0.015 mmol/L) on entry versus 5.17±0.03 mg/dl (1.29±0.01 mmol/L) in control subjects (p<0.005), rose significantly on days 2 and 3, and was 5.12±0.04 mg/dl (1.28±0.01 mmol/L) at discharge (p<0.005). Changes in serum calcium level were similar, whereas serum magnesium and phosphorus levels were normal and did not change. Basal serum parathyroid hormone concentrations were elevated, rose further during the study, and were normal at discharge. Serum parathyroid hormone levels correlated inversely with blood ionized calcium levels, indicating that compensatory hyperparathyroidism occurs with low blood ionized calcium concentrations. Basal serum calcitonin values were evaluated on entry and decreased with clinical improvement. Serum calcitonin levels correlated significantly with low blood ionized calcium levels, indicating that hypercalcitoninemia may play a role in the pathogenesis of hypocalcemia in these children. Urine calcium excretion was not increased in the four children studied. We speculate that with clinical improvement, a rise in serum parathyroid hormone levels and a decline in serum calcitonin levels may help restore normocalcemia in these acutely ill children. We studied the hypotheses that serum calcium and blood ionized calcium would be low in acutely ill children and would rise with clinical improvement. In 15 children admitted to the pediatric intensive care unit, the blood ionized calcium level was 4.45±0.06 mg/dl (1.11±0.015 mmol/L) on entry versus 5.17±0.03 mg/dl (1.29±0.01 mmol/L) in control subjects (p<0.005), rose significantly on days 2 and 3, and was 5.12±0.04 mg/dl (1.28±0.01 mmol/L) at discharge (p<0.005). Changes in serum calcium level were similar, whereas serum magnesium and phosphorus levels were normal and did not change. Basal serum parathyroid hormone concentrations were elevated, rose further during the study, and were normal at discharge. Serum parathyroid hormone levels correlated inversely with blood ionized calcium levels, indicating that compensatory hyperparathyroidism occurs with low blood ionized calcium concentrations. Basal serum calcitonin values were evaluated on entry and decreased with clinical improvement. Serum calcitonin levels correlated significantly with low blood ionized calcium levels, indicating that hypercalcitoninemia may play a role in the pathogenesis of hypocalcemia in these children. Urine calcium excretion was not increased in the four children studied. We speculate that with clinical improvement, a rise in serum parathyroid hormone levels and a decline in serum calcitonin levels may help restore normocalcemia in these acutely ill children." @default.
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- W2040433663 title "Hypercalcitoninemia and hypocalcemia in acutely ill children: Studies in serum calcium, blood ionized calcium, and calcium-regulating hormones" @default.
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- W2040433663 doi "https://doi.org/10.1016/s0022-3476(89)80436-6" @default.
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