Sinai A, Nassar M, Shornikov L, Constantinescu M, Zaaroor M, Schlesinger I. Focused Ultrasound Thalamotomy for Tremor Relief in Atypical Parkisnsonism.
PARKINSON'S DISEASE 2024;
2024:6643510. [PMID:
38476865 PMCID:
PMC10932618 DOI:
10.1155/2024/6643510]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 12/04/2023] [Accepted: 02/08/2024] [Indexed: 03/14/2024]
Abstract
Background
Magnetic resonance imaging (MRI)-guided focused ultrasound (FUS) VIM-thalamotomy has established efficacy and safety in tremor relief in patients with essential tremor and Parkinson's disease. The efficacy and safety in patients with atypical parkinsonism have not been reported.
Objective
To report on the efficacy and safety of FUS VIM-thalamotomy in 8 patients with parkinsonism, multiple system atrophy-Parkinsonian type (MSA-P) (n = 5), and dementia with Lewy bodies (DLB) (n = 3).
Methods
Tremor was assessed in the treated hemibody using the Clinical Rating Scale for Tremor (CRST). The motor Unified MSA Rating Scale (UMSAR) was used in the MSA-P and motor sections of the Unified Parkinson's Disease Rating Scale (UPDRS-III) in DLB patients. Cognition was measured using the Montreal Cognitive Assessment (MoCA).
Results
In MSA-P and DLB patients, there was immediate tremor relief. CRST scores measured on the treated side improved compared to baseline. During the follow-up of up to 1 year tremor reduction persisted. The change in CRST scores at different time points did not reach statistical significance, probably due to the small sample size. Adverse events were transient and resolved within a year.
Conclusions
In our experience, FUS VIM-thalamotomy was effective in patients with MSA-P and DLB. Larger, controlled studies are needed to verify our preliminary observations.
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