Preserved cutaneous silent period in cervical root avulsion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F17%3A43910193" target="_blank" >RIV/00216208:11120/17:43910193 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1179/2045772315Y.0000000053" target="_blank" >http://dx.doi.org/10.1179/2045772315Y.0000000053</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1179/2045772315Y.0000000053" target="_blank" >10.1179/2045772315Y.0000000053</a>
Alternative languages
Result language
angličtina
Original language name
Preserved cutaneous silent period in cervical root avulsion
Original language description
Objective Brachial plexus injuries are usually severe and involve the entire brachial plexus, sometimes occurring with root avulsions. Imaging and electrodiagnostic studies are an essential part of the lesion evaluation; however, the results sometimes show a discrepancy. The cutaneous silent period (SP) is a spinal inhibitory reflex mediated by small-diameter A-delta nociceptive fibers. The aim of the study was to determine if cutaneous SP testing may serve as a useful aid in evaluation of brachial plexus injury and/or in the diagnosis of root avulsion. Methods In 19 patients with traumatic brachial plexus injury (15 males, age 18-62 years) we performed a clinical examination, CT myelography and neurophysiological testing. A needle EMG was obtained from muscles supplied by C5-T1 myotomes. Cutaneous SP was recorded after painful stimuli were delivered to the thumb (C6 dermatome), middle (C7) and little (C8) fingers while subjects maintained voluntary contraction of intrinsic hand muscles. Results Electrodiagnostic and imaging studies confirmed root avulsion (partial or total) maximally involving C5, C6 roots in 12 patients, whereas only in 4 of them the cutaneous SP was partially absent. In the remaining subjects, the cutaneous SP was preserved. Conclusion In brachial plexopathy even with plurisegmental root avulsion, the cutaneous SP was mostly preserved. This method cannot be recommended as a reliable test for diagnosis of single root avulsion; however, it can provide a quick physiological confirmation of functional afferent A-delta fibers through damaged roots and/or trunks. The clinicians may add this test to the diagnosis of spinal cord dysfunction.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30210 - Clinical neurology
Result continuities
Project
<a href="/en/project/NT13693" target="_blank" >NT13693: Morphological, histochemical and electrophysiological changes in the chest wall muscles in patients with idiopathic scoliosis and their potential role in the etiopathogenesis of the disease.</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The Journal of Spinal Cord Medicine
ISSN
1079-0268
e-ISSN
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Volume of the periodical
40
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
175-180
UT code for WoS article
000401735000009
EID of the result in the Scopus database
2-s2.0-84978505251