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Therapeutic Advances in the Treatment of Holmes Tremor: Systematic Review

Congratulations Drs. Kai‐Liang Wang,  Joshua K. Wong,  Robert S. Eisinger, Christine Smith, Wei Hu,  Aparna Wagle Shukla, Christopher W. Hess, Michael S. Okun and Adolfo Ramirez‐Zamora on the publication of “Therapeutic Advances in the Treatment of Holmes Tremor: Systematic Review,” in the June issue of Neuromodulation Technology at the Neural Interface.

Abstract

Objective

We aimed to formulate a practical clinical treatment algorithm for Holmes’s tremor (HT) by reviewing currently published clinical data.

Materials and Methods

We performed a systematic review of articles discussing the management of HT published between January 1990 and December 2018. We examined data from 89 patients published across 58 studies detailing the effects of pharmacological or surgical interventions on HT severity. Clinical outcomes were measured by a continuous 1‐10 ranked scale. The majority of studies addressing treatment response were case series or case reports. No randomized control studies were identified.

Results

Our review included 24 studies focusing on pharmacologic treatments of 25 HT patients and 34 studies focusing on the effect of deep brain stimulation (DBS) in 64 patients. In the medical intervention group, the most commonly used drugs were levetiracetam, trihexyphenidyl, and levodopa. In the surgically treated group, the thalamic ventralis intermedius nucleus (VIM) and globus pallidus internus (GPi) were the most common brain targets for neuromodulation. The two targets accounted for 57.8% and 32.8% of total cases, respectively. Overall, compared to the medically treated group, DBS provided greater tremor suppression (p = 0.025) and was more effective for the management of postural tremor in HT. Moreover, GPi DBS displayed greater benefit in the resting tremor component (p = 0.042) and overall tremor reduction (p = 0.022).

Conclusions

There is a highly variable response to different medical treatments in HT without randomized clinical trials available to dictate treatment decisions. A variety of medical and surgical treatment options can be considered for the management of HT. Collaborative reseach between different institutions and researchers are warranted and needed to improve our understanding of the pathophysiology and management of this condition. In this review, we propose a practical treatment algorithm for HT based on currently available evidence.



from Department of Neurology » College of Medicine » University of Florida https://ift.tt/3ffUHHw

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