A new diagnostic test to distinguish tremulous Parkinson's disease from advanced essential tremor
Identifieur interne : 000413 ( Main/Exploration ); précédent : 000412; suivant : 000414A new diagnostic test to distinguish tremulous Parkinson's disease from advanced essential tremor
Auteurs : Muthuraman Muthuraman [Allemagne] ; Abdulnasir Hossen [Oman] ; Ulrich Heute [Allemagne] ; Günther Deuschl [Allemagne] ; Jan Raethjen [Allemagne]Source :
- Movement Disorders [ 0885-3185 ] ; 2011-07.
English descriptors
Abstract
Background:: Clinical distinction between advanced essential tremor and tremulous Parkinson's disease can be difficult. Methods:: In selected power spectra of accelerometric postural tremor recordings on the more affected side of 41 patients with essential tremor and 39 patients with tremulous Parkinson's disease being indistinguishable by tremor frequency, peak power or number of harmonic peaks, waveform asymmetry (autocorrelation decay), and mean peak power of all harmonic peaks were computed. Cutoff for essential tremor–Parkinson's disease distinction was determined by receiver operating characteristics. Diagnostic yield was tested in 12 clinically unclear patients with monosymptomatic tremor, subsequently definitively diagnosed with essential tremor (n = 2) or Parkinson's disease (n = 10) by 123‐I FP‐CIT–single‐photon emission computed tomography, fluorodopa‐positron emission tomography, or clinical course. Results:: By autocorrelation decay 64%, by mean harmonic peak power 94% (Parkinson's disease > essential tremor) of patients with a definite clinical diagnosis, and 11 of 12 clinically unclear patients were classified correctly. Conclusions:: Mean harmonic power is a useful measure to separate clinically difficult cases of advanced essential tremor from tremulous Parkinson's disease. © 2011 Movement Disorder Society
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DOI: 10.1002/mds.23672
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Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-07">2011-07</date><biblScope unit="volume">26</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="1548">1548</biblScope><biblScope unit="page" to="1552">1552</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">DEAD6AE06D22C93EB0AB604B51515EB4B33020C7</idno><idno type="DOI">10.1002/mds.23672</idno><idno type="ArticleID">MDS23672</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>accelerometry</term><term>differential diagnosis</term><term>essential tremor</term><term>parkinsonian tremor</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Background:: Clinical distinction between advanced essential tremor and tremulous Parkinson's disease can be difficult. Methods:: In selected power spectra of accelerometric postural tremor recordings on the more affected side of 41 patients with essential tremor and 39 patients with tremulous Parkinson's disease being indistinguishable by tremor frequency, peak power or number of harmonic peaks, waveform asymmetry (autocorrelation decay), and mean peak power of all harmonic peaks were computed. Cutoff for essential tremor–Parkinson's disease distinction was determined by receiver operating characteristics. Diagnostic yield was tested in 12 clinically unclear patients with monosymptomatic tremor, subsequently definitively diagnosed with essential tremor (n = 2) or Parkinson's disease (n = 10) by 123‐I FP‐CIT–single‐photon emission computed tomography, fluorodopa‐positron emission tomography, or clinical course. Results:: By autocorrelation decay 64%, by mean harmonic peak power 94% (Parkinson's disease > essential tremor) of patients with a definite clinical diagnosis, and 11 of 12 clinically unclear patients were classified correctly. Conclusions:: Mean harmonic power is a useful measure to separate clinically difficult cases of advanced essential tremor from tremulous Parkinson's disease. © 2011 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Oman</li></country><region><li>Schleswig-Holstein</li></region><settlement><li>Kiel</li></settlement></list><tree><country name="Allemagne"><region name="Schleswig-Holstein"><name sortKey="Muthuraman, Muthuraman" sort="Muthuraman, Muthuraman" uniqKey="Muthuraman M" first="Muthuraman" last="Muthuraman">Muthuraman Muthuraman</name></region><name sortKey="Deuschl, Gunther" sort="Deuschl, Gunther" uniqKey="Deuschl G" first="Günther" last="Deuschl">Günther Deuschl</name><name sortKey="Heute, Ulrich" sort="Heute, Ulrich" uniqKey="Heute U" first="Ulrich" last="Heute">Ulrich Heute</name><name sortKey="Raethjen, Jan" sort="Raethjen, Jan" uniqKey="Raethjen J" first="Jan" last="Raethjen">Jan Raethjen</name></country><country name="Oman"><noRegion><name sortKey="Hossen, Abdulnasir" sort="Hossen, Abdulnasir" uniqKey="Hossen A" first="Abdulnasir" last="Hossen">Abdulnasir Hossen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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