Journal of Capital Medical University ›› 2005, Vol. 26 ›› Issue (2): 187-189.

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Disorders of Serum Sodium among Children after Hypothalamus Tumors Operations

Li Dezhi, Wang Zhongcheng, Liu Ying, Zhang Yuqi, Ma Zhenyu   

  1. Beijing Neurosurgery Institute, Capital University of Medical Sciences
  • Received:2004-01-30 Revised:1900-01-01 Online:2005-04-24 Published:2005-04-24

Abstract:

Objective To analyze characteristics of the disorders of serum sodium among children after tumors operations in the hypothalamus region. Methods 24 children with the tumor in this region were studied. The electrolyte and the sodium in 24h urine were measured everyday before and after operation. The crystal osmotic pressures of serum were analyzed at the peak of serum sodium change. Results 4 children had normal serum sodium among the 24 Cases, 6 with hypernatremia, 8 with hyponatremia and 6 with both high and low serum sodium. In hypernatremia cases, the crystal osmotic pressure of serum increased and the urine sodium reduced sharply after operation compared with that of before operation. In hyponatremia cases, the crystal osmotic pressure of serum reduced and the urine sodium increased more significantly after operation than those of before operation. Conclusion The disorders of serum sodium among children after tumors operations in the hypothalamus region were common. The disorders of serum sodium were related to the changes of urine sodium. Hypernatremia is characterized by decreased urine sodium secretion. Hyponatremia is characterized by decreased serum sodium and increased urine sodium secretion.

Key words: seller region, the third ventricle, after operation, hypernatremia, hyponatremia, children

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