Methods of H-reflex evaluation in the early stages of Parkinson's disease.
Identifieur interne : 001493 ( Main/Curation ); précédent : 001492; suivant : 001494Methods of H-reflex evaluation in the early stages of Parkinson's disease.
Auteurs : M. Sabbahi [États-Unis] ; B. Etnyre ; I Al ; S. Hasson ; Joseph Jankovic [États-Unis]Source :
- Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society [ 0736-0258 ] ; 2002.
English descriptors
- KwdEn :
- Adult, Aged, Diagnosis, Differential, Female, H-Reflex (physiology), Humans, Male, Middle Aged, Motor Neurons (physiology), Parkinson Disease (diagnosis), Parkinson Disease (physiopathology), Predictive Value of Tests, Reaction Time (physiology), Reference Values, Reflex, Abnormal (physiology), Vibration.
- MESH :
- diagnosis : Parkinson Disease.
- physiology : H-Reflex, Motor Neurons, Reaction Time, Reflex, Abnormal.
- physiopathology : Parkinson Disease.
- Adult, Aged, Diagnosis, Differential, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Reference Values, Vibration.
Abstract
Differentiating the early stages of Parkinson's disease from the normal consequences of aging or from other common neurologic conditions can be diagnostically problematic. The purpose of this study was to compare methodologies for measuring motor neuron excitability of Parkinson's disease patients with a control group. H-reflexes were monitored in 16 patients diagnosed in the early stages of Parkinson's disease (Hoehn & Yahr stages I and II) compared with 30 subjects who were disease free. Methods of measurement included H-reflex latencies, the relative values of maximum H-reflexes to maximum direct motor responses (H-to-M ratio), the relative values of H-reflex amplitudes during vibration compared with control H-reflex amplitudes (Hv-to-Hc ratio), and double-stimulation H-reflex recovery curves using different interstimulus interval parameters. No significant differences were observed for the H-to-M or Hv-to-Hc ratios, or for the H-reflex latencies. The H-reflex recovery curves for the patients with Parkinson's disease demonstrated significantly greater ratio amplitudes than the control group during the double-stimulus responses between the 150-msec and 700-msec interstimulus intervals. Although comparisons of simple H-reflexes and H-reflexes during vibration did not differentiate the patients in the early stages of Parkinson's disease from the control group, the double-stimulation paradigm was a sensitive method for detecting early diagnoses of this disease.
PubMed: 11896355
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pubmed:11896355Le document en format XML
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Hasson</name></author><author><name sortKey="Jankovic, J" sort="Jankovic, J" uniqKey="Jankovic J" first="J" last="Jankovic">Joseph Jankovic</name><affiliation><country>États-Unis</country><placeName><settlement type="city">Houston</settlement><region type="state">Texas</region></placeName><orgName type="university" n="3">Baylor College of Medicine</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:11896355</idno><idno type="pmid">11896355</idno><idno type="wicri:Area/PubMed/Corpus">000233</idno><idno type="wicri:Area/PubMed/Curation">000233</idno><idno type="wicri:Area/PubMed/Checkpoint">000224</idno><idno type="wicri:Area/Ncbi/Merge">000043</idno><idno type="wicri:Area/Ncbi/Curation">000043</idno><idno type="wicri:Area/Ncbi/Checkpoint">000043</idno><idno type="wicri:doubleKey">0736-0258:2002:Sabbahi M:methods:of:h</idno><idno type="wicri:Area/Main/Merge">001549</idno><idno type="wicri:Area/Main/Curation">001493</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Methods of H-reflex evaluation in the early stages of Parkinson's disease.</title><author><name sortKey="Sabbahi, M" sort="Sabbahi, M" uniqKey="Sabbahi M" first="M" last="Sabbahi">M. Sabbahi</name><affiliation wicri:level="2"><nlm:affiliation>Texas Woman's University, 1130 John Freeman Boulevard, Houston, TX 77030, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Texas Woman's University, 1130 John Freeman Boulevard, Houston, TX 77030</wicri:regionArea><placeName><region type="state">Texas</region></placeName></affiliation></author><author><name sortKey="Etnyre, B" sort="Etnyre, B" uniqKey="Etnyre B" first="B" last="Etnyre">B. Etnyre</name></author><author><name sortKey="Al Jawayed, I A" sort="Al Jawayed, I A" uniqKey="Al Jawayed I" first="I" last="Al">I Al</name></author><author><name sortKey="Hasson, S" sort="Hasson, S" uniqKey="Hasson S" first="S" last="Hasson">S. Hasson</name></author><author><name sortKey="Jankovic, J" sort="Jankovic, J" uniqKey="Jankovic J" first="J" last="Jankovic">Joseph Jankovic</name><affiliation><country>États-Unis</country><placeName><settlement type="city">Houston</settlement><region type="state">Texas</region></placeName><orgName type="university" n="3">Baylor College of Medicine</orgName></affiliation></author></analytic><series><title level="j">Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society</title><idno type="ISSN">0736-0258</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Diagnosis, Differential</term><term>Female</term><term>H-Reflex (physiology)</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Motor Neurons (physiology)</term><term>Parkinson Disease (diagnosis)</term><term>Parkinson Disease (physiopathology)</term><term>Predictive Value of Tests</term><term>Reaction Time (physiology)</term><term>Reference Values</term><term>Reflex, Abnormal (physiology)</term><term>Vibration</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>H-Reflex</term><term>Motor Neurons</term><term>Reaction Time</term><term>Reflex, Abnormal</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Diagnosis, Differential</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Predictive Value of Tests</term><term>Reference Values</term><term>Vibration</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Differentiating the early stages of Parkinson's disease from the normal consequences of aging or from other common neurologic conditions can be diagnostically problematic. The purpose of this study was to compare methodologies for measuring motor neuron excitability of Parkinson's disease patients with a control group. H-reflexes were monitored in 16 patients diagnosed in the early stages of Parkinson's disease (Hoehn & Yahr stages I and II) compared with 30 subjects who were disease free. Methods of measurement included H-reflex latencies, the relative values of maximum H-reflexes to maximum direct motor responses (H-to-M ratio), the relative values of H-reflex amplitudes during vibration compared with control H-reflex amplitudes (Hv-to-Hc ratio), and double-stimulation H-reflex recovery curves using different interstimulus interval parameters. No significant differences were observed for the H-to-M or Hv-to-Hc ratios, or for the H-reflex latencies. The H-reflex recovery curves for the patients with Parkinson's disease demonstrated significantly greater ratio amplitudes than the control group during the double-stimulus responses between the 150-msec and 700-msec interstimulus intervals. Although comparisons of simple H-reflexes and H-reflexes during vibration did not differentiate the patients in the early stages of Parkinson's disease from the control group, the double-stimulation paradigm was a sensitive method for detecting early diagnoses of this disease.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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