Treatment of dysarthria following subthalamic nucleus deep brain stimulation for Parkinson's disease

Background: Deep brain stimulation of the subthalamic nucleus (STN‐DBS) is an established treatment for patients with Parkinson's disease (PD). Speech impairment is a frequent side effect of the surgery. This study examined the efficacy of an intensive speech treatment, the Lee Silverman Voice...

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Published in:Movement disorders 2011-11, Vol.26 (13), p.2434-2436
Main Authors: Tripoliti, Elina, Strong, Laura, Hickey, Freya, Foltynie, Tom, Zrinzo, Ludvic, Candelario, Joseph, Hariz, Marwan, Limousin, Patricia
Format: Article
Language:English
Subjects:
Biological and medical sciences
Deep Brain Stimulation - adverse effects
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Dysarthria - etiology
Dysarthria - physiopathology
Dysarthria - therapy
Humans
LSVT
Medical sciences
Middle Aged
Neurology
Parkinson Disease - therapy
Parkinson's disease
Severity of Illness Index
speech
Speech Therapy - methods
STN-DBS
Subthalamic Nucleus - physiology
Subthalamic Nucleus - surgery
Treatment Outcome
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Summary:Background: Deep brain stimulation of the subthalamic nucleus (STN‐DBS) is an established treatment for patients with Parkinson's disease (PD). Speech impairment is a frequent side effect of the surgery. This study examined the efficacy of an intensive speech treatment, the Lee Silverman Voice Treatment (LSVT) on dysarthria after STN‐DBS. Methods: The LSVT was administered to 10 patients with STN‐DBS (surgical group) and 10 patients without (medical group). Patients were assessed before, immediately after, and 6 months following the speech treatment using sustained phonation, a speech intelligibility scale, and monologue. Vocal loudness, speech intelligibility, and perceptual ratings were the primary outcome measures. Results: Vocal loudness and perceptual scores improved significantly across tasks for the medical group only. Speech intelligibility did not significantly change for either group. Results in the surgical group were variable, with some patients deteriorating. Conclusions: Treatment of dysarthria following STN‐DBS needs further investigation because of the variable response to LSVT. © 2011 Movement Disorder Society
ISSN:0885-3185
1531-8257
DOI:10.1002/mds.23887