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What is the Functional Significance of Non-dominant Arm Tremor in Essential Tremor?

Identifieur interne : 002E21 ( Ncbi/Checkpoint ); précédent : 002E20; suivant : 002E22

What is the Functional Significance of Non-dominant Arm Tremor in Essential Tremor?

Auteurs : Elan D. Louis [États-Unis] ; Marina Gerbin [États-Unis] ; Mary M. Mullaney [États-Unis]

Source :

Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2010.

RBID : PMC:2978780

English descriptors

KwdEn :
- Activities of Daily Living, Adolescent, Adult, Aged, Aged, 80 and over, Arm (physiopathology), Essential Tremor (physiopathology), Female, Functional Laterality (physiology), Humans, Male, Middle Aged, Severity of Illness Index, Tremor (physiopathology).
MESH :
- physiology : Functional Laterality.
- physiopathology : Arm, Essential Tremor, Tremor.
- Activities of Daily Living, Adolescent, Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Severity of Illness Index.

Abstract

Background

Tremor in the dominant arm is often the focus of clinical attention in essential tremor (ET) yet many daily activities require both arms. The functional relevance of non-dominant arm tremor has rarely been studied.

Methods

In 181 right-handed ET patients, action tremor in each arm was rated using a clinical ratings scale. Tremor disability was self-reported and a performance-based test of function was administered.

Results

Independently of tremor on the right, greater tremor severity on the left was associated with greater self-reported disability (p=0.02) and greater performance-based dysfunction (p<0.001). In 5.0% of patients, tremor was largely restricted to the non-dominant arm.

Conclusions

Non-dominant arm tremor, independent of dominant arm tremor, had a significant functional correlate, contributing to both greater perceived and greater observable functional difficulty. In 5% of patients, tremor in the non-dominant arm was the likely motivator for seeking care, which is another indication of its functional significance.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2978780

DOI: 10.1002/mds.23284
PubMed: 20803512
PubMed Central: 2978780

Affiliations:

Links to Exploration step

PMC:2978780

Le document en format XML

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<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Arm (physiopathology)</term>
<term>Essential Tremor (physiopathology)</term>
<term>Female</term>
<term>Functional Laterality (physiology)</term>
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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Background</title>
<p id="P5">Tremor in the dominant arm is often the focus of clinical attention in essential tremor (ET) yet many daily activities require both arms. The functional relevance of non-dominant arm tremor has rarely been studied.</p>
</sec>
<sec sec-type="methods" id="S2"><title>Methods</title>
<p id="P6">In 181 right-handed ET patients, action tremor in each arm was rated using a clinical ratings scale. Tremor disability was self-reported and a performance-based test of function was administered.</p>
</sec>
<sec id="S3"><title>Results</title>
<p id="P7">Independently of tremor on the right, greater tremor severity on the left was associated with greater self-reported disability (p=0.02) and greater performance-based dysfunction (p<0.001). In 5.0% of patients, tremor was largely restricted to the non-dominant arm.</p>
</sec>
<sec id="S4"><title>Conclusions</title>
<p id="P8">Non-dominant arm tremor, independent of dominant arm tremor, had a significant functional correlate, contributing to both greater perceived and greater observable functional difficulty. In 5% of patients, tremor in the non-dominant arm was the likely motivator for seeking care, which is another indication of its functional significance.</p>
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<name sortKey="Gerbin, Marina" sort="Gerbin, Marina" uniqKey="Gerbin M" first="Marina" last="Gerbin">Marina Gerbin</name>
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<name sortKey="Louis, Elan D" sort="Louis, Elan D" uniqKey="Louis E" first="Elan D." last="Louis">Elan D. Louis</name>
<name sortKey="Louis, Elan D" sort="Louis, Elan D" uniqKey="Louis E" first="Elan D." last="Louis">Elan D. Louis</name>
<name sortKey="Mullaney, Mary M" sort="Mullaney, Mary M" uniqKey="Mullaney M" first="Mary M." last="Mullaney">Mary M. Mullaney</name>
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Movement Disorders (revue)

What is the Functional Significance of Non-dominant Arm Tremor in Essential Tremor?

What is the Functional Significance of Non-dominant Arm Tremor in Essential Tremor?

Source :

English descriptors

Abstract

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Links to Exploration step

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	Movement Disorders (revue)
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