Electrolyte disorders associated with risperidone in psychotic patients
Primary psychiatric disorders are frequently associated with electrolyte disorders, which could be caused by medication. We performed a systematic review of the literature in order to discover published cases of electrolyte disorders associated with risperidone use. The databases Medline and Scopus were searched and 317 publications were retrieved containing the following keywords: risperidone, hyponatremia, hypernat remia, hypokalemia, hyperkalemia, hypocalcemia and hypercalcemia. We included in our review the following publication types: the original scientific research, case reports, review of literature and letters to the editor. Case reports and observational studies associating risperidone with hyponatremia or hypokalemia, as well as with hypocalcemia were found. In spite of sporadic case reports of risperidone induced electrolyte disorders, conflicting opinions and results of other studies quest ion the certainty of this association. Further research is necessary to confirm and enlighten the association between risperidone and electrolyte disorders.