Cognitive functioning after pallidotomy for refractory Parkinson’s disease

BACKGROUND Earlier approaches to pallidotomy for refractory Parkinson’s disease had significant complication rates. More recent approaches show fewer complications, but the effect of pallidotomy on cognition is unclear. The current study was conducted to examine the neuropsychological effects of uni...

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Veröffentlicht in:Journal of neurology, neurosurgery and psychiatry neurosurgery and psychiatry, 1998-08, Vol.65 (2), p.150-154
Hauptverfasser: Perrine, Kenneth, Dogali, Michael, Fazzini, Enrico, Sterio, Djorje, Kolodny, Edwin, Eidelberg, David, Devinsky, Orrin, Beric, Aleksandar
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container_end_page 154
container_issue 2
container_start_page 150
container_title Journal of neurology, neurosurgery and psychiatry
container_volume 65
creator Perrine, Kenneth
Dogali, Michael
Fazzini, Enrico
Sterio, Djorje
Kolodny, Edwin
Eidelberg, David
Devinsky, Orrin
Beric, Aleksandar
description BACKGROUND Earlier approaches to pallidotomy for refractory Parkinson’s disease had significant complication rates. More recent approaches show fewer complications, but the effect of pallidotomy on cognition is unclear. The current study was conducted to examine the neuropsychological effects of unilateral pallidotomy. METHODS Neuropsychological testing was performed on patients with medically refractory, predominantly unilateral Parkinson’s disease at baseline and after unilateral ventral pallidotomy (n=28) or after an equivalent period without surgery in control patients (n=10). RESULTS Pallidotomy patients showed no significant changes from baseline to retesting relative to the control group for any measure. Across all of the tests administered, only five of the surgery patients showed a significant decline, and of these five none declined on more than one test. Depression did not relate to preoperative or postoperative cognition. The pallidotomy group showed a significant improvement in motor functioning and activities of daily living whereas the control group did not. These measures were not associated with the neuropsychological test scores at baseline or retest. CONCLUSIONS Stereotactic unilateral ventral pallidotomy does not seem to produce dramatic cognitive declines in most patients.
doi_str_mv 10.1136/jnnp.65.2.150
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More recent approaches show fewer complications, but the effect of pallidotomy on cognition is unclear. The current study was conducted to examine the neuropsychological effects of unilateral pallidotomy. METHODS Neuropsychological testing was performed on patients with medically refractory, predominantly unilateral Parkinson’s disease at baseline and after unilateral ventral pallidotomy (n=28) or after an equivalent period without surgery in control patients (n=10). RESULTS Pallidotomy patients showed no significant changes from baseline to retesting relative to the control group for any measure. Across all of the tests administered, only five of the surgery patients showed a significant decline, and of these five none declined on more than one test. Depression did not relate to preoperative or postoperative cognition. The pallidotomy group showed a significant improvement in motor functioning and activities of daily living whereas the control group did not. These measures were not associated with the neuropsychological test scores at baseline or retest. CONCLUSIONS Stereotactic unilateral ventral pallidotomy does not seem to produce dramatic cognitive declines in most patients.</description><identifier>ISSN: 0022-3050</identifier><identifier>EISSN: 1468-330X</identifier><identifier>DOI: 10.1136/jnnp.65.2.150</identifier><identifier>PMID: 9703163</identifier><identifier>CODEN: JNNPAU</identifier><language>eng</language><publisher>London: BMJ Publishing Group Ltd</publisher><subject>Activities of daily living ; Activities of Daily Living - classification ; Aged ; Biological and medical sciences ; Cognition Disorders - diagnosis ; Cognition Disorders - etiology ; Cognitive ability ; Combined Modality Therapy ; Dementia ; Female ; Follow-Up Studies ; Globus Pallidus - surgery ; Humans ; Levodopa - administration &amp; dosage ; Male ; Medical sciences ; Metabolic disorders ; Middle Aged ; Morbidity ; Mortality ; Neuropsychological Tests ; Neurosurgery ; pallidotomy ; Parkinson Disease - surgery ; Parkinson's disease ; Postoperative Complications - diagnosis ; Postoperative Complications - etiology ; Skull, brain, vascular surgery ; Stereotaxic Techniques ; Studies ; Surgery ; Surgery (general aspects). 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More recent approaches show fewer complications, but the effect of pallidotomy on cognition is unclear. The current study was conducted to examine the neuropsychological effects of unilateral pallidotomy. METHODS Neuropsychological testing was performed on patients with medically refractory, predominantly unilateral Parkinson’s disease at baseline and after unilateral ventral pallidotomy (n=28) or after an equivalent period without surgery in control patients (n=10). RESULTS Pallidotomy patients showed no significant changes from baseline to retesting relative to the control group for any measure. Across all of the tests administered, only five of the surgery patients showed a significant decline, and of these five none declined on more than one test. Depression did not relate to preoperative or postoperative cognition. The pallidotomy group showed a significant improvement in motor functioning and activities of daily living whereas the control group did not. These measures were not associated with the neuropsychological test scores at baseline or retest. CONCLUSIONS Stereotactic unilateral ventral pallidotomy does not seem to produce dramatic cognitive declines in most patients.</description><subject>Activities of daily living</subject><subject>Activities of Daily Living - classification</subject><subject>Aged</subject><subject>Biological and medical sciences</subject><subject>Cognition Disorders - diagnosis</subject><subject>Cognition Disorders - etiology</subject><subject>Cognitive ability</subject><subject>Combined Modality Therapy</subject><subject>Dementia</subject><subject>Female</subject><subject>Follow-Up Studies</subject><subject>Globus Pallidus - surgery</subject><subject>Humans</subject><subject>Levodopa - administration &amp; dosage</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Metabolic disorders</subject><subject>Middle Aged</subject><subject>Morbidity</subject><subject>Mortality</subject><subject>Neuropsychological Tests</subject><subject>Neurosurgery</subject><subject>pallidotomy</subject><subject>Parkinson Disease - surgery</subject><subject>Parkinson's disease</subject><subject>Postoperative Complications - diagnosis</subject><subject>Postoperative Complications - etiology</subject><subject>Skull, brain, vascular surgery</subject><subject>Stereotaxic Techniques</subject><subject>Studies</subject><subject>Surgery</subject><subject>Surgery (general aspects). 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More recent approaches show fewer complications, but the effect of pallidotomy on cognition is unclear. The current study was conducted to examine the neuropsychological effects of unilateral pallidotomy. METHODS Neuropsychological testing was performed on patients with medically refractory, predominantly unilateral Parkinson’s disease at baseline and after unilateral ventral pallidotomy (n=28) or after an equivalent period without surgery in control patients (n=10). RESULTS Pallidotomy patients showed no significant changes from baseline to retesting relative to the control group for any measure. Across all of the tests administered, only five of the surgery patients showed a significant decline, and of these five none declined on more than one test. Depression did not relate to preoperative or postoperative cognition. The pallidotomy group showed a significant improvement in motor functioning and activities of daily living whereas the control group did not. These measures were not associated with the neuropsychological test scores at baseline or retest. CONCLUSIONS Stereotactic unilateral ventral pallidotomy does not seem to produce dramatic cognitive declines in most patients.</abstract><cop>London</cop><pub>BMJ Publishing Group Ltd</pub><pmid>9703163</pmid><doi>10.1136/jnnp.65.2.150</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
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subjects Activities of daily living
Activities of Daily Living - classification
Aged
Biological and medical sciences
Cognition Disorders - diagnosis
Cognition Disorders - etiology
Cognitive ability
Combined Modality Therapy
Dementia
Female
Follow-Up Studies
Globus Pallidus - surgery
Humans
Levodopa - administration & dosage
Male
Medical sciences
Metabolic disorders
Middle Aged
Morbidity
Mortality
Neuropsychological Tests
Neurosurgery
pallidotomy
Parkinson Disease - surgery
Parkinson's disease
Postoperative Complications - diagnosis
Postoperative Complications - etiology
Skull, brain, vascular surgery
Stereotaxic Techniques
Studies
Surgery
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Treatment Outcome
title Cognitive functioning after pallidotomy for refractory Parkinson’s disease
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