The value of F wave in Bell's palsy. A study of F wave response in the facial muscles

A. Ahiron, I. Sarova Pinhas

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

F wave response was recorded from facial muscles in 33 untreated patients with complete Bell's palsy and in 30 normal subjects. All the patients were examined within 10 days of the onset of the palsy. The normal value of F conduction time was found to be 2.87 ± 1.13 msec. The mean F conduction time in all the patients with Bell's Palsy was 6.02 ± 3.87 msec. Statistical analysis of the results of F wave responses from facial muscles in patients with Bell's Palsy demonstrates two sub groups: one with proximal nerve lesion and one with distal nerve lesion. It was concluded that F response can be used as a diagnostic tool for localization of the nerve lesion, but has no value as a prognostic indicator in the early stage of Bell's palsy.

Original languageEnglish
Pages (from-to)99-106
Number of pages8
JournalElectromyography and Clinical Neurophysiology
Volume24
Issue number1-2
StatePublished - 1984
Externally publishedYes

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