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Titolo:
VRMS T QUANTITATION - USEFULNESS IN PATIENTS WITH NEUROPATHIES/
Autore:
FISHER MA; ITKIN A;
Indirizzi:
EDWARD HINES JR VET ADM HOSP,DEPT NEUROL 127 HINES IL 60141 LOYOLA UNIV,STRITCH SCH MED,DEPT NEUROL MAYWOOD IL 60153
Titolo Testata:
Muscle & nerve
fascicolo: 12, volume: 18, anno: 1995,
pagine: 1398 - 1402
SICI:
0148-639X(1995)18:12<1398:VTQ-UI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROMYOGRAPHY; MUSCLE;
Keywords:
NEUROPATHIES; QUANTITATIVE EMG; TURNS; ROOT MEAN SQUARE VOLTAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Fisher e A. Itkin, "VRMS T QUANTITATION - USEFULNESS IN PATIENTS WITH NEUROPATHIES/", Muscle & nerve, 18(12), 1995, pp. 1398-1402

Abstract

This study evaluates the sensitivity of root mean square voltage (Vrms)/turns (T) ratios in neuropathies. Data were recorded with concentric needle electrodes from the biceps brachii, first dorsal interosseous, tibialis anterior, and calf muscles, Recordings were analyzed from 35 normal subjects as well as 24 consecutive patients referred for evaluation of neuropathic disorders, Direct tension measurements were not required. Reasoning from studies in normal subjects in which Vrms/T values were related to measurements of relative tension, the data were recorded during strong muscle contractions of less than 80% of maximum tension as monitored by mean amplitude values. For all 5 muscles, meanVrms/T values greater than or equal to 1.0 calculated from four separate needle sites were significantly more frequent in the patients thancontrols (p < 0.012-0.0001), There were 13 muscles in which relevant conduction studies were abnormal and Vrms/T greater than or equal to 1.0 were the only abnormality of the needle EMG examination, In addition, a Vrms/T of greater than or equal to 1.0 was present in 10/14 muscles in which abnormalities might have been expected but where other needle EMG parameters were unremarkable and relevant nerve conductions normal, This study indicates that Vrms/T measurements can add meaningfully to the electrodiagnostic evaluation of neurogenic dysfunction. (C) 1995 John Wiley & Sons, Inc.

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Documento generato il 07/07/20 alle ore 19:14:52