The value of external anal sphincter electromyography for the diagnosis of multiple system atrophy
Identifieur interne : 000520 ( France/Analysis ); précédent : 000519; suivant : 000521The value of external anal sphincter electromyography for the diagnosis of multiple system atrophy
Auteurs : François Tison [France] ; Pierre Arne [France] ; Chrystophe Sourgen [France] ; Virginie Chrysostome [France] ; Farid Yeklef [France]Source :
- Movement Disorders [ 0885-3185 ] ; 2000-11.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Adulte.
English descriptors
- KwdEn :
- Adult, Aged, Anal Canal (physiopathology), Anal sphincter, Anal sphincter electromyography, Diagnosis, Differential, Differential diagnostic, Electromyography, External, Female, Humans, Male, Middle Aged, Multiple System Atrophy (complications), Multiple System Atrophy (diagnosis), Multiple System Atrophy (physiopathology), Multiple system atrophy, Parkinson Disease, Secondary (etiology), Parkinson Disease, Secondary (physiopathology), Parkinsonism, Predictive Value of Tests, Predictive value, Retrospective Studies, Sensitivity, Sensitivity and Specificity, Specificity, Technique.
- MESH :
- complications : Multiple System Atrophy.
- diagnosis : Multiple System Atrophy.
- etiology : Parkinson Disease, Secondary.
- physiopathology : Anal Canal, Multiple System Atrophy, Parkinson Disease, Secondary.
- Adult, Aged, Diagnosis, Differential, Electromyography, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Retrospective Studies, Sensitivity and Specificity.
Abstract
OBJECTIVE: To assess the value of external anal sphincter electromyography (ASEMG) for the diagnosis of multiple system atrophy (MSA) among various causes of parkinsonism. ASEMG denervation profiles have previously been proposed as a diagnosis test for MSA, but their specificity is disputed. METHODS: ASEMG variables of 52 parkinsonian patients were analyzed according to the clinical diagnosis: MSA (n = 31) or no MSA (n = 21). Mean motor unit potential duration, percentage of polyphasicity, and the electromyographer's interpretation were analyzed according to clinical diagnosis, disease duration, genitourinary symptoms, gender, parity, and history of pelvic surgery. RESULTS: All patients with MSA showed ASEMG denervation. Mean motor unit potential duration was the most discriminant variable. No patient with MSA had a mean duration less than 12 ms and no patient without MSA had one greater than 16 ms. ASEMG discriminates between patients with MSA and Parkinson's disease. Using a threshold of 13 ms, the sensitivity was 80% and specificity was almost 70% (positive predictive value, 80%) for the diagnosis of MSA. Age, history of pelvic surgery, and to a lesser extent, female gender, parity, disease duration, and presence of urinary symptoms increased the likelihood of abnormal ASEMG. CONCLUSION: ASEMG was highly sensitive and rather specific for the diagnosis of MSA.
Url:
DOI: 10.1002/1531-8257(200011)15:6<1148::AID-MDS1014>3.0.CO;2-6
Affiliations:
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U‐330, Centre Hospitalier Universitaire, Bordeaux</wicri:regionArea><placeName><settlement type="city">Bordeaux</settlement></placeName></affiliation></author><author><name sortKey="Chrysostome, Virginie" sort="Chrysostome, Virginie" uniqKey="Chrysostome V" first="Virginie" last="Chrysostome">Virginie Chrysostome</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Service de Neurologie, INSERM U‐330, Centre Hospitalier Universitaire, Bordeaux</wicri:regionArea><placeName><settlement type="city">Bordeaux</settlement></placeName></affiliation></author><author><name sortKey="Yeklef, Farid" sort="Yeklef, Farid" uniqKey="Yeklef F" first="Farid" last="Yeklef">Farid Yeklef</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Service de Neurologie, INSERM U‐330, Centre Hospitalier Universitaire, Bordeaux</wicri:regionArea><placeName><settlement type="city">Bordeaux</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="sub">Official Journal of the Movement Disorder Society</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>John Wiley & Sons, Inc.</publisher><pubPlace>New York</pubPlace><date type="published" when="2000-11">2000-11</date><biblScope unit="vol">15</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="1148">1148</biblScope><biblScope unit="page" to="1157">1157</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">EAD057B06884149A2897C290EE4A708A943B2CEC</idno><idno type="DOI">10.1002/1531-8257(200011)15:6<1148::AID-MDS1014>3.0.CO;2-6</idno><idno type="ArticleID">MDS1014</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Anal Canal (physiopathology)</term><term>Anal sphincter</term><term>Anal sphincter electromyography</term><term>Diagnosis, Differential</term><term>Differential diagnostic</term><term>Electromyography</term><term>External</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Multiple System Atrophy (complications)</term><term>Multiple System Atrophy (diagnosis)</term><term>Multiple System Atrophy (physiopathology)</term><term>Multiple system atrophy</term><term>Parkinson Disease, Secondary (etiology)</term><term>Parkinson Disease, Secondary (physiopathology)</term><term>Parkinsonism</term><term>Predictive Value of Tests</term><term>Predictive value</term><term>Retrospective Studies</term><term>Sensitivity</term><term>Sensitivity and Specificity</term><term>Specificity</term><term>Technique</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Multiple System Atrophy</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Multiple System Atrophy</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Parkinson Disease, Secondary</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Anal Canal</term><term>Multiple System Atrophy</term><term>Parkinson Disease, Secondary</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Diagnosis, Differential</term><term>Electromyography</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Predictive Value of Tests</term><term>Retrospective Studies</term><term>Sensitivity and Specificity</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Adulte</term><term>Atrophie multisystématisée</term><term>Diagnostic différentiel</term><term>Electromyographie</term><term>Externe</term><term>Parkinsonisme</term><term>Sensibilité</term><term>Sphincter anal</term><term>Spécificité</term><term>Technique</term><term>Valeur prédictive</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Adulte</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">OBJECTIVE: To assess the value of external anal sphincter electromyography (ASEMG) for the diagnosis of multiple system atrophy (MSA) among various causes of parkinsonism. ASEMG denervation profiles have previously been proposed as a diagnosis test for MSA, but their specificity is disputed. METHODS: ASEMG variables of 52 parkinsonian patients were analyzed according to the clinical diagnosis: MSA (n = 31) or no MSA (n = 21). Mean motor unit potential duration, percentage of polyphasicity, and the electromyographer's interpretation were analyzed according to clinical diagnosis, disease duration, genitourinary symptoms, gender, parity, and history of pelvic surgery. RESULTS: All patients with MSA showed ASEMG denervation. Mean motor unit potential duration was the most discriminant variable. No patient with MSA had a mean duration less than 12 ms and no patient without MSA had one greater than 16 ms. ASEMG discriminates between patients with MSA and Parkinson's disease. Using a threshold of 13 ms, the sensitivity was 80% and specificity was almost 70% (positive predictive value, 80%) for the diagnosis of MSA. Age, history of pelvic surgery, and to a lesser extent, female gender, parity, disease duration, and presence of urinary symptoms increased the likelihood of abnormal ASEMG. CONCLUSION: ASEMG was highly sensitive and rather specific for the diagnosis of MSA.</div></front></TEI><affiliations><list><country><li>France</li></country><settlement><li>Bordeaux</li></settlement></list><tree><country name="France"><noRegion><name sortKey="Tison, Francois" sort="Tison, Francois" uniqKey="Tison F" first="François" last="Tison">François Tison</name></noRegion><name sortKey="Arne, Pierre" sort="Arne, Pierre" uniqKey="Arne P" first="Pierre" last="Arne">Pierre Arne</name><name sortKey="Chrysostome, Virginie" sort="Chrysostome, Virginie" uniqKey="Chrysostome V" first="Virginie" last="Chrysostome">Virginie Chrysostome</name><name sortKey="Sourgen, Chrystophe" sort="Sourgen, Chrystophe" uniqKey="Sourgen C" first="Chrystophe" last="Sourgen">Chrystophe Sourgen</name><name sortKey="Yeklef, Farid" sort="Yeklef, Farid" uniqKey="Yeklef F" first="Farid" last="Yeklef">Farid Yeklef</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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