1. Association between bipolar episodes and fluid and electrolyte homeostasis: a retrospective longitudinal study
- Author
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Amir Krivoy, Avi Valevski, Eldar Hochman, Abraham Weizman, and Tsvi Fischel
- Subjects
Adult ,Male ,medicine.medical_specialty ,Longitudinal study ,Bipolar Disorder ,Hematocrit ,Gastroenterology ,Electrolytes ,Hemoglobins ,Albumins ,Internal medicine ,mental disorders ,medicine ,Homeostasis ,Humans ,Longitudinal Studies ,Bipolar disorder ,Physical Therapy Modalities ,Biological Psychiatry ,Depression (differential diagnoses) ,Retrospective Studies ,Psychiatric Status Rating Scales ,Analysis of Variance ,Psychotropic Drugs ,medicine.diagnostic_test ,Sodium ,Repeated measures design ,Middle Aged ,medicine.disease ,Hemoconcentration ,Psychiatry and Mental health ,Anesthesia ,Female ,Analysis of variance ,medicine.symptom ,Psychology ,Mania - Abstract
Objectives Imbalance of fluid and electrolyte homeostasis has been suggested to be associated with the neuropathological processes underlying bipolar disorder. However, longitudinal data regarding the association of bipolar episodes with fluid balance are still lacking. We hypothesized that mania may be associated with a relative fluid retention and hemodilution, and depression with a relative hemoconcentration. Methods Patients with bipolar disorder (n = 43) admitted to a mental health center, both with depressive and manic episodes, were retrospectively followed between 2005 and 2013. Fluid balance and electrolyte serum indices were compared between their manic and depressive episodes. We adjusted for physical and psychiatric comorbidities and for psychotropic treatment, using two-way analysis of variance with repeated measures. Results There was a significant reduction in serum fluid balance indices during mania compared to depression: mean hemoglobin concentration 13.9 ± 1.4 g/dL versus 14.5 ± 1.4 g/dL, paired t = −4.2, p
- Published
- 2014
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