Incidence of Irritable Electromyography in Inflammatory Myopathy

Research output: Contribution to journalArticle

Abstract

Needle electromyography (EMG) findings in patients with myopathy can be classified as "irritable" or "non-irritable," depending on the presence or absence of "abnormal spontaneous activity" in the form of fibrillation potentials, positive sharp waves, or complex, repetitive discharges. An irritable myopathy suggests either an active necrotizing myopathic process and/or unstable muscle membrane potential. Although inflammatory myopathies are traditionally considered to show irritable myopathic changes on EMG, the precise incidence of these changes is not known. We retrospectively reviewed the EMG findings in 178 consecutive patients with biopsy-confirmed myopathy. Inflammatory myopathy was defined on the basis of biopsy findings combined with clinical features. Needle EMG showed "irritable" myopathic features in 66% of the patients in the inflammatory histology myopathic group and in 30% patients with non-inflammatory histology (p

Original languageEnglish (US)
Pages (from-to)64-67
Number of pages4
JournalJournal of Clinical Neuromuscular Disease
Volume1
Issue number2
StatePublished - Dec 1999

Fingerprint

Myositis
Electromyography
Muscular Diseases
Incidence
Needles
Histology
Biopsy
Membrane Potentials
Muscles

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Incidence of Irritable Electromyography in Inflammatory Myopathy. / Lyu, Rong Kuo; Cornblath, David; Chaudhry, Vinay.

In: Journal of Clinical Neuromuscular Disease, Vol. 1, No. 2, 12.1999, p. 64-67.

Research output: Contribution to journalArticle

@article{ede997a2515b4537bbc2f83cb0e7a773,
title = "Incidence of Irritable Electromyography in Inflammatory Myopathy",
abstract = "Needle electromyography (EMG) findings in patients with myopathy can be classified as {"}irritable{"} or {"}non-irritable,{"} depending on the presence or absence of {"}abnormal spontaneous activity{"} in the form of fibrillation potentials, positive sharp waves, or complex, repetitive discharges. An irritable myopathy suggests either an active necrotizing myopathic process and/or unstable muscle membrane potential. Although inflammatory myopathies are traditionally considered to show irritable myopathic changes on EMG, the precise incidence of these changes is not known. We retrospectively reviewed the EMG findings in 178 consecutive patients with biopsy-confirmed myopathy. Inflammatory myopathy was defined on the basis of biopsy findings combined with clinical features. Needle EMG showed {"}irritable{"} myopathic features in 66{\%} of the patients in the inflammatory histology myopathic group and in 30{\%} patients with non-inflammatory histology (p",
author = "Lyu, {Rong Kuo} and David Cornblath and Vinay Chaudhry",
year = "1999",
month = "12",
language = "English (US)",
volume = "1",
pages = "64--67",
journal = "Journal of Clinical Neuromuscular Disease",
issn = "1522-0443",
publisher = "Lippincott Williams and Wilkins",
number = "2",

}

TY - JOUR

T1 - Incidence of Irritable Electromyography in Inflammatory Myopathy

AU - Lyu, Rong Kuo

AU - Cornblath, David

AU - Chaudhry, Vinay

PY - 1999/12

Y1 - 1999/12

N2 - Needle electromyography (EMG) findings in patients with myopathy can be classified as "irritable" or "non-irritable," depending on the presence or absence of "abnormal spontaneous activity" in the form of fibrillation potentials, positive sharp waves, or complex, repetitive discharges. An irritable myopathy suggests either an active necrotizing myopathic process and/or unstable muscle membrane potential. Although inflammatory myopathies are traditionally considered to show irritable myopathic changes on EMG, the precise incidence of these changes is not known. We retrospectively reviewed the EMG findings in 178 consecutive patients with biopsy-confirmed myopathy. Inflammatory myopathy was defined on the basis of biopsy findings combined with clinical features. Needle EMG showed "irritable" myopathic features in 66% of the patients in the inflammatory histology myopathic group and in 30% patients with non-inflammatory histology (p

AB - Needle electromyography (EMG) findings in patients with myopathy can be classified as "irritable" or "non-irritable," depending on the presence or absence of "abnormal spontaneous activity" in the form of fibrillation potentials, positive sharp waves, or complex, repetitive discharges. An irritable myopathy suggests either an active necrotizing myopathic process and/or unstable muscle membrane potential. Although inflammatory myopathies are traditionally considered to show irritable myopathic changes on EMG, the precise incidence of these changes is not known. We retrospectively reviewed the EMG findings in 178 consecutive patients with biopsy-confirmed myopathy. Inflammatory myopathy was defined on the basis of biopsy findings combined with clinical features. Needle EMG showed "irritable" myopathic features in 66% of the patients in the inflammatory histology myopathic group and in 30% patients with non-inflammatory histology (p

UR - http://www.scopus.com/inward/record.url?scp=0345734861&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345734861&partnerID=8YFLogxK

M3 - Article

C2 - 19078554

AN - SCOPUS:0345734861

VL - 1

SP - 64

EP - 67

JO - Journal of Clinical Neuromuscular Disease

JF - Journal of Clinical Neuromuscular Disease

SN - 1522-0443

IS - 2

ER -