Renal sonography in bipolar patients on long-term lithium treatment

ABSTRACT Purpose The aim of the study was to analyze sonographic (US) renal findings in lithium‐treated bipolar patients and to correlate them with renal function. Methods Renal US and renal function tests were performed on 120 patients with bipolar disorder. Ninety patients (30 males, 60 females),...

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Published in:Journal of clinical ultrasound 2016-07, Vol.44 (6), p.354-359
Main Authors: Jończyk-Potoczna, Katarzyna, Abramowicz, Maria, Chłopocka-Woźniak, Maria, Strzelczuk-Judka, Lidia, Michalak, Michał, Czekalski Prof, Stanisław, Rybakowski Prof, Janusz K.
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
bipolar disorder
Bipolar Disorder - drug therapy
Female
Glomerular Filtration Rate - physiology
Humans
kidney
Kidney - diagnostic imaging
Kidney - drug effects
Kidney - physiopathology
Kidney Function Tests
Lithium Compounds - therapeutic use
lithium nephropathy
Male
Middle Aged
sonography
Time
Ultrasonic imaging
Ultrasonography - methods
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Summary:ABSTRACT Purpose The aim of the study was to analyze sonographic (US) renal findings in lithium‐treated bipolar patients and to correlate them with renal function. Methods Renal US and renal function tests were performed on 120 patients with bipolar disorder. Ninety patients (30 males, 60 females), aged 36–82 years, had received lithium therapy for an average of 16 years, whereas 30 patients (10 males, 20 females), aged 35–85 years, who had never been exposed to lithium, served as controls. Results In the lithium‐treated group, patients with macrocysts (22%) had poorer renal function with higher creatinine serum concentrations, lower estimated glomerular filtration rates, and lower urine specific gravity, compared with the patients without macrocysts. The US changes characteristic for lithium nephropathy (punctate hyperechoic foci, microcysts < 2 mm, and increased echogenicity) were seen in three patients. These patients had been treated with lithium for more than 20 years and had impaired renal function. Sixteen percent of patients in the control group had macrocysts; however, no correlation between their presence and impaired renal function was found. Conclusions The presence of macrocysts in the kidneys of lithium‐treated bipolar patients is associated with impaired renal function. The US changes characteristic for lithium nephropathy are rare, and in our study, were only found in patients treated with lithium for 20 years or more. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound 44:354–359, 2016
ISSN:0091-2751
1097-0096
DOI:10.1002/jcu.22336