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A Study of Compulsive Water Drinking and Water Intoxication in Psychiatric Inpatients: prevention by frequent body weighing Jun Sakamoto 1 1Miyagi Prefectural Natori Hospital Keyword: Compulsive water drinking , Water intoxication , Prevention , Schizophrenic inpatients , Diurnal weight fluctuations pp.1087-1096
Published Date 1992/10/15
DOI https://doi.org/10.11477/mf.1405904948
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 In order to examine the compulsive water drinking and water intoxication in patients undergoing long-term psychiatric treatment, a total of 21 patients with polydipsia (6.6%) were selected from the 318 inpatients in Miyagi Prefectural Natori Hospital according to the Matsuda's criteria for the assessment of polydipsia. Twenty patients (18 men, 2 women: mean age 46.6 years) who were capable of giving informed consent, were weighed everyday at 6:30 AM and 4:30 PM for three weeks, and were measured for serum sodium level one day a week at the same time during the observation period, and for levels of urine osmotic pressure, urine specific gravity, plasma ADH, ANP, and plasma osmotic pressure once.

 All 7 patients with a previous history of water intoxication (2.2%, named high risk patients here) belonged to the polydipsia group. The average diurnal change of body weight and serum sodium levels were much greater in the high risk patients than others within the polydipsia group, and serum sodium levels were significantly correlated with that of body weight (r = -0.83, p<0.001) within the polydipsia group. The urine osmotic pressure levels of all 20 patients and the urine specific gravity levels of 17 patients were below normal values. Most patients had normal values for the other variables.


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-126X 印刷版ISSN 0488-1281 医学書院

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