Decrease the rate of exchange. Signs and symptoms of disequilibrium syndrome, which results from rapid changes in composition of the extracellular fluid and cerebral edema; the exchange rate should be decreased. Although increasing the rate of infusion may relieve the headache, it will not relieve the other adaptations or the cause of disequilibrium syndrome. Although administering an antiemetic may relieve the nausea, it will not relieve the other adaptations or the cause of disequilibrium syndrome. Discontinuing the procedure is unnecessary; reducing the rate of exchange should reduce the adaptations of disequilibrium syndrome.