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Titolo:
ARE FIBRILLATION POTENTIALS AND POSITIVE SHARP WAVES THE SAME - NO
Autore:
KRAFT GH;
Indirizzi:
UNIV WASHINGTON,DEPT REHABIL MED RJ30 SEATTLE WA 98195
Titolo Testata:
Muscle & nerve
fascicolo: 2, volume: 19, anno: 1996,
pagine: 216 - 220
SICI:
0148-639X(1996)19:2<216:AFPAPS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
MUSCLE; DENERVATION; MEMBRANE;
Keywords:
FIBRILLATION POTENTIALS; POSITIVE SHARP WAVES; DENERVATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
G.H. Kraft, "ARE FIBRILLATION POTENTIALS AND POSITIVE SHARP WAVES THE SAME - NO", Muscle & nerve, 19(2), 1996, pp. 216-220

Abstract

Electrodiagnostic medicine consultants report electrical activity in muscle recorded at rest and during voluntary movement by means of waveform and firing rate characteristics. This principle allows us to distinguish fibrillation potentials from positive sharp waves. Although inmost cases these two potentials have the same clinical significance, there are at least five different situations in which they do not havean identical meaning: (1) positive sharp waves can be recorded earlier after a peripheral nerve injury than can fibrillation potentials; (2) occasionally, nonclinically significant diffuse positive sharp wave activity may be seen in the absence of fibrillation activity (i.e., ''EMG disease''); (3) positive sharp waves may be seen in distal musclesof ''normal'' subjects without the presence of fibrillation activity or clinical significance; (4) positive sharp waves without fibrillation potentials may be seen following local muscle trauma; and (5) positive sharp waves may be seen alone in some demyelinating polyneuropathies. By accurately describing the observed potentials, the electrodiagnostic medicine consultant may be able to obtain more clinically useful information from an electrodiagnostic study. (C) 1996 John Wiley & Sons, Inc.

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Documento generato il 30/09/20 alle ore 05:37:19