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  • Title: Surgical treatments for Parkinson's disease.
    Author: Uitti RJ.
    Journal: Can Fam Physician; 2000 Feb; 46():368-73. PubMed ID: 10690493.
    Abstract:
    OBJECTIVE: This article reviews surgical treatments for Parkinson's disease, emphasizing aspects pertinent to family physicians: rationale for and description of surgeries, patient selection issues, and outcome expectations. QUALITY OF EVIDENCE: No published series describes long-term follow up of a randomized controlled study of any surgery for Parkinson's disease. Some reports, however, describe thorough but brief follow up of functioning in small numbers of patients following surgery. MEDLINE articles were identified using Parkinson's disease, surgery, pallidotomy, thalamotomy, stimulation, grafting, and transplantation as search words. Articles chosen for this paper described patients with systematic follow up using accepted validated rating scales. MAIN MESSAGE: Reported series show impressive improvements to patients undergoing lesioning, stimulation, and grafting surgery for Parkinson's disease. These patients are typically severely disabled but highly selected, and follow up is brief. Stereotactic lesioning (pallidotomy and thalamotomy), deep brain stimulation (thalamic, and elsewhere) and grafting (striatal) can be performed safely, but results vary greatly among centres. CONCLUSIONS: Certain Parkinson's disease patients might benefit from surgery. Ideal candidates for pallidotomy experience motor fluctuations with disabling levodopa-induced dyskinesias. Tremors resistant to antiparkinsonian medications sometimes respond to thalamotomy or thalamic stimulation. Other parkinsonian syndromes, dementias, and difficulties with gait and balance respond poorly to unilateral pallidotomy. Bilateral deep brain stimulation procedures could benefit "midline" dysfunction.
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