title: Multicenter study on deep brain stimulation in Parkinson's disease: an independent assessment of reported adverse events at 4 years.
abstract: Ongoing adverse events (AEs) at 4-years postsurgery in 69 patients with advanced Parkinson's disease (PD) who received deep brain stimulation (DBS) of the subthalamic nucleus (STN) (n = 49) or the internal globus pallidus (GPi) (n = 20), in the framework of a subset of eight centers of a multicenter study, were analyzed by an independent ad hoc committee. At baseline, the patients' age, sex, disease duration, and clinical condition were virtually identical, as was the duration of follow-up. There were 64 AEs reported in 53% of STN DBS patients and eight AEs reported in 35% of GPi DBS patients. Most of the AEs were not deemed severe and were reported to be present "both with and without stimulation." The majority of the AEs affected patients' cognitive, psychiatric and behavioral status, as well as speech, gait, and balance, and most of these AEs occurred in STN DBS patients. When comparing patients who exhibited AEs with those who did not, it was found that in the STN DBS group, the patients with AEs had a longer disease duration, as well as more gait disorders and psychiatric disturbances at baseline.
authors: Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, Queen Square, London, United Kingdom. m.hariz@ion.ucl.ac.uk
authors: Marwan I
authors: MI
authors: Hariz
authors: Stig
authors: S
authors: Rehncrona
authors: Niall P
authors: NP
authors: Quinn
authors: Johannes D
authors: JD
authors: Speelman
authors: Carin
authors: C
authors: Wensing
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D046690:Deep Brain Stimulation / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D020233:Gait Disorders, Neurologic / Q000209:etiology; D005917:Globus Pallidus / Q000502:physiology / Q000528:radiation effects; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D001523:Mental Disorders / Q000209:etiology; D008875:Middle Aged; D009460:Neurologic Examination; D010300:Parkinson Disease / Q000628:therapy*; D020531:Subthalamic Nucleus / Q000502:physiology / Q000528:radiation effects