Description of Event or Problem · 1
JOURNAL REFERENCE: BLOMSTEDT P, HARIZ MI, LEES A, ET AL. ACUTE SEVERE DEPRESSION INDUCED BY INTRAOPERATIVE STIMULATION OF THE SUBSTANTIA NIGRA: A CASE REPORT. PARKINSONISM RELAT DISORD 2008; 14(3): 253-256. WE PRESENT A MAN WITH PARKINSON'S DISEASE (PD) WHO UNDERWENT BILATERAL STIMULATION IN THE SUBTHALAMIC NUCLEUS (STN). DURING THE INTRAOPERATIVE EVALUATION, STIMULATION THROUGH THE LOWEST CONTACT IN THE RIGHT STN AREA, INDUCED AN ACUTE DEPRESSIVE STATE, DURING WHICH THE PT WAS CRYING AND EXPRESSING THAT HE DID NOT WANT TO LIVE. THE PT RETURNED TO HIS NORMAL STATE OF MOOD WITHIN SECONDS AFTER THE CESSATION OF STIMULATION. REPEATED BLINDED STIMULATIONS RESULTED IN THE SAME RESPONSE IMMEDIATE POSTOPERATIVE MAGNETIC RESONANCE IMAGING (MRI) REVEALED THAT THE LOWEST CONTACT OF THE RIGHT ELECTRODE WAS LOCATED IN THE SUBSTANTIA NIGRA. REPORTABLE EVENT: THE PT HAS NOW BEEN FOLLOWED FOR 5 YEARS. DURING THIS PERIOD, NO CHANGES IN MOOD HAVE BEEN NOTED, NOR ANY OTHER PSYCHOLOGICAL OR COGNITIVE CHANGE. THE MAIN RECENT COMPLAINTS HAVE BEEN GAIT AND BALANCE DIFFICULTIES, FREEZING OF GAIT AND STUTTERING (FREEZING OF SPEECH) WHEN ON MEDICATION AND ON STIMULATION.