Is essential tremor predominantly a kinetic or a postural tremor? A clinical and electrophysiological study.
Identifieur interne : 000723 ( Ncbi/Checkpoint ); précédent : 000722; suivant : 000724Is essential tremor predominantly a kinetic or a postural tremor? A clinical and electrophysiological study.
Auteurs : Kevin C. Brennan [États-Unis] ; Eva C. Jurewicz ; Blair Ford ; Seth L. Pullman ; Elan D. LouisSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2002.
English descriptors
- KwdEn :
- MESH :
- diagnosis : Essential Tremor.
- physiology : Motor Skills, Posture.
- physiopathology : Essential Tremor.
- Aged, Electrodiagnosis, Female, Humans, Image Processing, Computer-Assisted, Male, Middle Aged, Neurologic Examination, Sensitivity and Specificity, Videotape Recording.
Abstract
Both postural and kinetic tremors may occur in essential tremor (ET), however the relative contribution of each is not clear. ET has been variably defined with respect to kinetic and postural tremors. To examine the relative severity of postural and kinetic tremors in ET, 50 ET cases from a clinic and 55 from a community underwent a videotaped tremor examination. Kinetic and postural tremors were rated using a validated clinical rating scale (score range, 0-3). Thirty-one cases also underwent accelerometry to precisely quantify tremor amplitude. In clinic cases, the mean postural tremor rating was 1.25 (S.D., 0.89). The mean kinetic tremor rating was 52% higher (1.90; S.D., 0.57; P < 0.001). The community cases had similar characteristics. Sixty percent of the 105 cases had postural tremor ratings scoring 0 or 1 (no tremor or low amplitude, intermittent tremor). In clinic cases, the mean amplitude of postural tremor during tremor analysis was 0.51 mm (S.D., 0.66 mm), and the mean amplitude of kinetic tremor was 2.91 mm (S.D., 2.11 mm; P < 0.01). Similar values were obtained for community cases. These quantitative data suggest that kinetic tremor is more severe than postural tremor in ET. The majority of cases had mild or absent postural tremor. Despite this, ET is defined only as a postural tremor in many studies. Our data argue for a more consistent inclusion of kinetic tremor in diagnostic criteria for ET.
PubMed: 11921117
Affiliations:
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Pullman</name></author><author><name sortKey="Louis, Elan D" sort="Louis, Elan D" uniqKey="Louis E" first="Elan D" last="Louis">Elan D. Louis</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Electrodiagnosis</term><term>Essential Tremor (diagnosis)</term><term>Essential Tremor (physiopathology)</term><term>Female</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Male</term><term>Middle Aged</term><term>Motor Skills (physiology)</term><term>Neurologic Examination</term><term>Posture (physiology)</term><term>Sensitivity and Specificity</term><term>Videotape Recording</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Essential Tremor</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Motor Skills</term><term>Posture</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Essential Tremor</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Electrodiagnosis</term><term>Female</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Male</term><term>Middle Aged</term><term>Neurologic Examination</term><term>Sensitivity and Specificity</term><term>Videotape Recording</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Both postural and kinetic tremors may occur in essential tremor (ET), however the relative contribution of each is not clear. ET has been variably defined with respect to kinetic and postural tremors. To examine the relative severity of postural and kinetic tremors in ET, 50 ET cases from a clinic and 55 from a community underwent a videotaped tremor examination. Kinetic and postural tremors were rated using a validated clinical rating scale (score range, 0-3). Thirty-one cases also underwent accelerometry to precisely quantify tremor amplitude. In clinic cases, the mean postural tremor rating was 1.25 (S.D., 0.89). The mean kinetic tremor rating was 52% higher (1.90; S.D., 0.57; P < 0.001). The community cases had similar characteristics. Sixty percent of the 105 cases had postural tremor ratings scoring 0 or 1 (no tremor or low amplitude, intermittent tremor). In clinic cases, the mean amplitude of postural tremor during tremor analysis was 0.51 mm (S.D., 0.66 mm), and the mean amplitude of kinetic tremor was 2.91 mm (S.D., 2.11 mm; P < 0.01). Similar values were obtained for community cases. These quantitative data suggest that kinetic tremor is more severe than postural tremor in ET. The majority of cases had mild or absent postural tremor. Despite this, ET is defined only as a postural tremor in many studies. Our data argue for a more consistent inclusion of kinetic tremor in diagnostic criteria for ET.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>État de New York</li></region><settlement><li>New York</li></settlement><orgName><li>Université Columbia</li></orgName></list><tree><noCountry><name sortKey="Ford, Blair" sort="Ford, Blair" uniqKey="Ford B" first="Blair" last="Ford">Blair Ford</name><name sortKey="Jurewicz, Eva C" sort="Jurewicz, Eva C" uniqKey="Jurewicz E" first="Eva C" last="Jurewicz">Eva C. Jurewicz</name><name sortKey="Louis, Elan D" sort="Louis, Elan D" uniqKey="Louis E" first="Elan D" last="Louis">Elan D. Louis</name><name sortKey="Pullman, Seth L" sort="Pullman, Seth L" uniqKey="Pullman S" first="Seth L" last="Pullman">Seth L. Pullman</name></noCountry><country name="États-Unis"><region name="État de New York"><name sortKey="Brennan, Kevin C" sort="Brennan, Kevin C" uniqKey="Brennan K" first="Kevin C" last="Brennan">Kevin C. Brennan</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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