REDUCED PSYCHEDELIC EFFECTS OF KETAMINE INFUSION AFTER ELECTROCONVULSIVE THERAPY: A REPORT ON THREE CASES.

Psychedelic side effects of ketamine limit its use for the treatment of suicide ideations. Psychedelic effects after ketamine infusion were assessed in two patients received prior electroconvulsive therapy (ECT) and one who had not. Patients who received ECT prior to the infusion had lower mean scores on all domains of the hallucinogen rating scale compared to the patient who did not receive prior ECT. Confirming and understanding this association is needed through more rigorous research methods.