Is environmental temperature related to renal symptoms, serum lithium levels, and other laboratory test results in current lithium users?

Soham Rej, Bandar Alaqeel, Marilyn Segal, Nancy C.P. Low, Istvan Mucsi, Christina Holcroft, Karl Looper

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Objective Lithium continues to be an important mood disorder treatment. Although patients exposed to higher environmental temperatures may have serum lithium level elevations due to dehydration, there is conflicting data in the literature. In addition, no study has assessed the association between temperature and other renal laboratory tests and symptoms in lithium users. Methods This is a cross-sectional analysis of 63 current lithium users who participated in the McGill Geriatric Lithium-induced Diabetes Insipidus Clinical Study. The relationship between mean daily temperature with diabetes insipidus symptoms, glomerular filtration rate, urine osmolality, serum sodium, lithium level, and lithium dose-level ratio was assessed. Results Although a higher temperature on the day of laboratory testing trended toward being independently associated with a lower lithium dose-level ratio (Beta = -0.17, p = 0.08), this was not found when using a dichotomous measure of temperature (T > 20C). No association was observed between temperature and other renal parameters. Conclusions The association of temperature with lithium levels, renal symptoms, and laboratory tests appears to be of relatively little clinical importance in lithium users in temperate climates. However, future research should re-examine patients living in climates with extreme temperatures (e.g., >40C), who may theoretically be at higher risk.

Original languageEnglish
Pages (from-to)392-396
Number of pages5
JournalHuman Psychopharmacology
Volume29
Issue number4
DOIs
Publication statusPublished - Jul 2014

Keywords

  • lithium
  • renal
  • serum lithium levels
  • temperature

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Psychiatry and Mental health
  • Pharmacology (medical)

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