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Article type: Research Article
Authors: Bouwyn, Jean-Paula | Derrey, Stéphaneb | Lefaucheur, Romaina | Fetter, Damiena | Rouille, Audreya | Le Goff, Florianea | Maltête, Davida; b; *
Affiliations: [a] Department of Neurology, Rouen University Hospital and University of Rouen, France | [b] Department of Neurosurgery, Rouen University Hospital and University of Rouen, France | [c] INSERM U1073, Rouen, France
Correspondence: [*] Correspondence to: David Maltête, M.D., Ph.D., Department of Neurology, Rouen University Hospital, 76031 Rouen Cedex, France. Tel.: +33 2 32 88 87 40; Fax: +33 2 32 88 87 41; E-mail: [email protected].
Abstract: Background: Clinical pre-operative predictive factors of optimal STN-DBS motor outcome in Parkinson’s disease (PD) have been previously reported. However, available data involving elderly patients are conflicting. Objective: To compare early post-operative outcomes in parkinsonian patients younger than 65 years old (group 1) vs patients 65 years old or older (group 2) at the time of surgery. Methods: The cognitive and motor effects of DBS were evaluated by comparison of different scores obtained before (baseline) and 6 months after surgery using a repeated measures analysis of variance. Results: Post-operative motor improvement (UPDRS part III and UPDRS part IV scores) and drug reduction were not statistically different between groups 1 and 2 (P > 0.05). Axial motor score which was significantly worse in group 2 in the on-drug condition before surgery was also significantly worse both in off-drug/on-stimulation and on-drug/on-stimulation conditions (P < 0.05). Similarly, cognitive performances (Wisconsin Card Sorting Test, Stroop interference test, Free and Cued Selective Reminding Test with Immediate Recall, Verbal Fluency) significantly worsened post-operatively ingroup 2. Conclusions: Although effective and safe, STN-DBS has a more negative impact on cognitive functions in elderly patient, requiring a careful preoperative selection.
Keywords: Subthalamic nucleus, deep brain stimulation, Parkinson’s disease, elderly
DOI: 10.3233/JPD-150742
Journal: Journal of Parkinson's Disease, vol. 6, no. 2, pp. 393-400, 2016
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