Abstract
With particular focus on clinical, pathophysiologic and epidemiologic aspects this systematic review article presents the available data on nephrotoxic effects of a long-term treatment with lithium. Lithium may lead to tubular dysfunction (LITD = nephrogenic diabetes insipidus, hyperchloremic metabolic acidosis, increased natriuresis) and lithium-induced nephropathy (LIN) with reduced glomerular filtration rate (GFR). The histopathologic finding of LIN is chronic tubulo-interstitial nephritis. LITD frequently presents with polydipsia/-uria and reduced urine osmolality, while LIN features a wide clinical spectrum ranging from clinically asymptomatic presentations with reduced GFR to end-stage renal failure. LIN seems to feature slow progression and is significantly less frequent than LITD. Regular monitoring of renal function is indispensable for patients treated with lithium. Patients with reduced GFR under treatment with lithium should always be presented to a nephrologist. Currently, there are no guidelines for the handling of patients with LIN and ongoing treatment with lithium. Thus, regarding continuation of lithium-treatment an individual benefit/risk assessment is necessary.
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