Abstract
We performed single fiber electromyography (SFEMG) in the superior rectus and levator palpebralis (SR-LP) muscles of 17 patients with pure ocular myasthenia gravis (MG) and 9 controls. Thirteen patients were also assessed with SFEMG in the orbicularis oculi (OO) muscle. All the MG patients but none of the control subjects showed abnormal SFEMG jitter in the SR-LP muscles. On the other hand, only 62% of the MG patients had abnormal SFEMG jitter in the OO muscle. The procedure was well tolerated by the patients, and complications were minor. We conclude that SFEMG of the SR-LP muscles is a safe and highly sensitive technique for the diagnosis of ocular MG.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 943-947 |
| Number of pages | 5 |
| Journal | Muscle and Nerve |
| Volume | 18 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1995 |
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Keywords
- ocular MG
- ophthalmoparesis
- single fiber electromyography
- SR-LP muscles
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)
Cite this
Single fiber electromyography of extraocular muscles : A sensitive method for the diagnosis of ocular myasthenia gravis. / Rivero, A.; Crovetto, L.; Lopez, L.; Maselli, Ricardo A; Nogues, M.
In: Muscle and Nerve, Vol. 18, No. 9, 1995, p. 943-947.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Single fiber electromyography of extraocular muscles
T2 - A sensitive method for the diagnosis of ocular myasthenia gravis
AU - Rivero, A.
AU - Crovetto, L.
AU - Lopez, L.
AU - Maselli, Ricardo A
AU - Nogues, M.
PY - 1995
Y1 - 1995
N2 - We performed single fiber electromyography (SFEMG) in the superior rectus and levator palpebralis (SR-LP) muscles of 17 patients with pure ocular myasthenia gravis (MG) and 9 controls. Thirteen patients were also assessed with SFEMG in the orbicularis oculi (OO) muscle. All the MG patients but none of the control subjects showed abnormal SFEMG jitter in the SR-LP muscles. On the other hand, only 62% of the MG patients had abnormal SFEMG jitter in the OO muscle. The procedure was well tolerated by the patients, and complications were minor. We conclude that SFEMG of the SR-LP muscles is a safe and highly sensitive technique for the diagnosis of ocular MG.
AB - We performed single fiber electromyography (SFEMG) in the superior rectus and levator palpebralis (SR-LP) muscles of 17 patients with pure ocular myasthenia gravis (MG) and 9 controls. Thirteen patients were also assessed with SFEMG in the orbicularis oculi (OO) muscle. All the MG patients but none of the control subjects showed abnormal SFEMG jitter in the SR-LP muscles. On the other hand, only 62% of the MG patients had abnormal SFEMG jitter in the OO muscle. The procedure was well tolerated by the patients, and complications were minor. We conclude that SFEMG of the SR-LP muscles is a safe and highly sensitive technique for the diagnosis of ocular MG.
KW - ocular MG
KW - ophthalmoparesis
KW - single fiber electromyography
KW - SR-LP muscles
UR - http://www.scopus.com/inward/record.url?scp=0029131955&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029131955&partnerID=8YFLogxK
U2 - 10.1002/mus.880180904
DO - 10.1002/mus.880180904
M3 - Article
C2 - 7643873
AN - SCOPUS:0029131955
VL - 18
SP - 943
EP - 947
JO - Muscle and Nerve
JF - Muscle and Nerve
SN - 0148-639X
IS - 9
ER -