Lithium use in elderly tied to significant decline of renal function, finds study
Canada: Lithium use over valproate significantly increases the risk of renal decline in older adults, according to a recent study published in the Journal of Clinical Psychiatry.
Lithium is used as a treatment for mood disorder however renal risks associated with its use in older adults are unknown. Soham Rej, at the department of psychiatry at McGill University in Canada, and colleagues determined whether lithium was associated with increased risk of renal decline compared to valproate and whether his association differs with higher vs lower baseline serum lithium concentrations.
The researchers conducted a population-based cohort study using linked health care databases (Ontario, Canada). The cohort consisted of older adults (mean age 71 years) accrued 2007–2015; 3,113 lithium users were propensity-score matched 1:1 to 3,113 valproate users. They then further examined users with higher (> 0.7 mmol/L) or lower concentrations of serum lithium.
The primary outcome was ≥ a 30% loss in estimated glomerular filtration rate from baseline.
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