[Lithium toxicity after bariatric surgery].

Since many years a correlation between neuropsychiatric disorders and eating disorders resulting in obesity is well established. According to different studies, 1.2 - 4 % of patients scheduled for bariatric surgery are taking lithium as a mood stabilizer treatment for bipolar disorder. We are presenting a case of lithium toxicity after vertical sleeve gastrectomy surgery in a 40 years-old female. The patient developed severe neurological and renal signs needing an intensive care unit admission and continuous veno-venous hemodiafiltration. A literature review provides insights into physiological and pharmacokinetics changes that could contribute to lithium poisoning after bariatric surgery. This article illustrates the need for closer monitoring of lithium serum levels following bariatric surgery and presents guidance in managing lithium therapy during perioperative period based on experts' opinion.