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Clinical Chemistry 34: 2239-2240, 1988;
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Clinical Chemistry, Vol 34, 2239-2240, Copyright © 1988 by American Association for Clinical Chemistry

Nosocomial dysnatremia

WD Neithercut and RJ Spooner
Department of Pathological Biochemistry, Western Infirmary, Glasgow, Scotland, U.K.

Patients who exhibited both hyponatremia and hypernatremia during a single admission were identified by a review of their biochemistry data. The mortality of patients who developed either hypernatremia or hyponatremia, followed by the opposite abnormality within less than or equal to 10 days, was 42%. This was greater than the 8.2% mortality for an age-, sex-, and admission-matched normonatremic control group (P less than 0.01, chi 2). Eight of the 10 patients who died had had a change in the sodium concentration in serum greater than 20 mmol/L. The interval (days) between the maximum and minimum sodium concentrations in the survivors and those who died was not statistically different. We found no specific clinical features that could be used to predict the development of this biochemical abnormality.




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Copyright © 1988 by the American Association for Clinical Chemistry.