Clinical outcome of unilateral stereotactic pallidotomy without microelectrode recording for intractable Parkinson's disease

R. B. Dewey, Cole A. Giller, S. K. Broline, D. B. Mendelsohn, L. H. Lacritz, C. M. Cullum

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Objective: To study the effects of unilateral stereotactic pallidotomy performed without microelectrode recording for advanced Parkinson's disease. Methods: Stereotactic coordinates were calculated by comparing preoperative inversion recovery MRI sequences with intraoperative CT scans. Conventional stereotactic stimulation techniques were employed to confirm correct probe placement. Patients were assessed using a modified CAPIT protocol with the off-state UPDRS motor score as the primary efficacy measure. Results: A statistically significant decline in off-state UPDRS motor scores occurred at 2 months (21% improvement in 32 patients) and also at 1 year postoperatively (30% improvement in 12 patients). Levodopa-induced dyskinesias on the side contralateral to surgery were reduced 97% in the cohort with 1 year of follow-up. No deleterious effects of surgery on global neuropsychological functioning were seen. A major surgical complication (mild but persistent hemiparesis) occurred in one patient. Conclusions: We believe that stereotactic pallidotomy can be performed safely and effectively without microelectrode recording when coordinates are calculated using CT with comparison to preoperative MRI sequences.

Original languageEnglish (US)
Pages (from-to)7-16
Number of pages10
JournalParkinsonism and Related Disorders
Volume6
Issue number1
DOIs
StatePublished - Jan 1 2000
Externally publishedYes

Keywords

  • Dyskinesias
  • Neuropsychometric testing
  • Outcome
  • Pallidotomy
  • Parkinson's disease

ASJC Scopus subject areas

  • Aging
  • Clinical Neurology
  • Neurology

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