title: Motor performance after posteroventral pallidotomy and VIM-thalamotomy in Parkinson's disease: a 1-year follow-up study.
abstract: Twenty-three patients with Parkinson's disease underwent stereotactic surgery. To study the long-term motor performance, the patients were evaluated at the pre-operative period and at the 1st, 3rd, 6th, and 12th post-operative months, with the following scales: Unified Parkinson's Disease Rating Scale (UPDRS) motor score and Larsen's Scale for Dyskinesias. The patients under levodopa therapy were assessed both in "on" and "off" periods. Fourteen unilateral ventrolateral thalamotomies (VLT), 4 unilateral posteroventral pallidotomies (PVP), 2 bilateral PVP, and 3 VLT with contralateral PVP were performed. The motor improvement was significant and long-lasting in the "off" period, except for 2 patients. The "on" period quality improved, mainly due to the control of dyskinesias. The improvement of dyskinesias was long-lasting for the majority of the patients. There was no significant decrease in the levodopa dose. Three patients showed permanent complications, but none was severe.
authors.affiliation: Department of Neurology and Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil.
authors.forename: P M
authors.initials: PM
authors.lastname: Aguiar
authors.forename: H B
authors.initials: HB
authors.lastname: Ferraz
authors.forename: F P
authors.initials: FP
authors.lastname: Ferraz
authors.forename: R A
authors.initials: RA
authors.lastname: Saba
authors.forename: M K
authors.initials: MK
authors.lastname: Hisatugo
authors.forename: L A
authors.initials: LA
authors.lastname: Andrade
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D000978:Antiparkinson Agents / Q000627:therapeutic use; D005500:Follow-Up Studies; D005917:Globus Pallidus / Q000601:surgery*; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use; D008875:Middle Aged; D009043:Motor Activity; D010300:Parkinson Disease / Q000188:drug therapy / Q000503:physiopathology / Q000601:surgery*; D013238:Stereotaxic Techniques / Q000009:adverse effects; D013788:Thalamus / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D000978:Antiparkinson Agents; D007980:Levodopa