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The Effect of Long-term Lithium Treatment on Renal Functions in Patients with Bipolar Disorder

Published online by Cambridge University Press:  23 March 2020

B. Ayik
Affiliation:
Istanbul Faculty of Medicine, Psychiatry, Istanbul, Turkey
S. Çakır
Affiliation:
Istanbul Faculty of Medicine, Psychiatry, Istanbul, Turkey
H. Yazıcı
Affiliation:
Istanbul Faculty of Medicine, Nephrology, Istanbul, Turkey
S. Karabulut
Affiliation:
Istanbul Faculty of Medicine, Psychiatry, Istanbul, Turkey

Abstract

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Introduction

The effect of lithium on tubular functions leading to decreased urinary concentrating ability is recognized. Although there are several studies type, severity and frequency of renal impairment and its correlation with duration of lithium therapy are not well established.

Objectives

To explore long-term effects of lithium on patients with chronic bipolar disorder.

Aims

We aimed to assess patients with bipolar disorder using lithium at least for six years in terms of renal functions, starting from mild impairments to full blown chronic renal failure.

Methods

Fifty-one patients with bipolar disorder and 38 age and sex matched healthy controls were enrolled for the study. Serum BUN, creatinine, uric acid, electrolytes, calcium (Ca), phosphorus (P), vitamin D (25-OH D3) and eGFR levels were measured. The correlations between renal function and mean lithium levels, duration of lithium treatment and GAF scores were calculated.

Results

Mean eGFR level of patients with bipolar disorder was significantly lower than that of controls. Serum creatinine, uric acid, Ca and PTH levels were higher, 25-OH D3 levels were lower in the patients than in controls. The duration of lithium treatment was positively correlated with serum creatinine and uric acid levels, negatively correlated with eGFR levels. Mean lithium levels were positively correlated with serum creatinine levels and negatively correlated with eGFR.

Conclusions

The study revealed that glomerular functioning of the patient group was significantly lower than that of the control group. The findings suggested that both duration of lithium treatment and high serum lithium levels may have a negative impact on glomerular functions.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
e-Poster walk: Anxiety disorders and somatoform disorders
Copyright
Copyright © European Psychiatric Association 2017
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