Optimizing of Electroneuronography ofthe Facial Nerve

Neuwirth-Riedl, K; Burian, Martin; Nekahm, Doris; Gstöttner, Wolfgang

doi:10.1159/000276165

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…Neuwirth‐Riedl et al 2 conducted a similar study with the goal of optimizing electroneurography of the facial nerve. In this investigation even under the most favorable test conditions the average side difference of the bilaterally recorded electroneurograms was 22% in normal test persons.…”

Section: Discussionmentioning

confidence: 99%

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Variability of repeated facial nerve electroneurography in healthy subjects

et al. 1998

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The symmetry of facial evoked compound potentials postulated by Esslen and Fisch is not supported by these data. As have other investigators, the authors found significant left-right differences in healthy subjects. Furthermore, they showed for the first time that the amplitude ratio is not constant in every individual at repeated measurements. In light of these data, prognosis of facial palsy based on electroneurographic data alone seems doubtful.

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Section: Discussionmentioning

confidence: 99%

“…Obviously the absence of physiological differences between the two sides is one prerequisite for the recommended interpretation of the test. However, in trying to reproduce Esslen's data, several authors obtained different results 2–5 …”

Section: Introductionmentioning

confidence: 99%

Variability of repeated facial nerve electroneurography in healthy subjects

et al. 1998

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“…The amplitude of the CMAP on the affected side is compared to the CMAP of the healthy side and expressed as percent (amplitude of the paralyzed side divided by the amplitude of the normal side). ENoG has a re-test variability of about 20%, [23][24][25]. The high test-retest variation in ENoG results is the most important criticism of this test [26].…”

Section: Electroneurography (Enog)mentioning

confidence: 99%

Facial nerve electrodiagnostics for patients with facial palsy: a clinical practice guideline

Guntinas‐Lichius

Volk

Olsen

et al. 2020

Eur Arch Otorhinolaryngol

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Purpose Facial nerve electrodiagnostics is a well-established and important tool for decision making in patients with facial nerve diseases. Nevertheless, many otorhinolaryngologist-head and neck surgeons do not routinely use facial nerve electrodiagnostics. This may be due to a current lack of agreement on methodology, interpretation, validity, and clinical application. Electrophysiological analyses of the facial nerve and the mimic muscles can assist in diagnosis, assess the lesion severity, and aid in decision making. With acute facial palsy, it is a valuable tool for predicting recovery. Methods This paper presents a guideline prepared by members of the International Head and Neck Scientific Group and of the Multidisciplinary Salivary Gland Society for use in cases of peripheral facial nerve disorders based on a systematic literature search. Results Required equipment, practical implementation, and interpretation of the results of facial nerve electrodiagnostics are presented. Conclusion The aim of this guideline is to inform all involved parties (i.e. otorhinolaryngologist-head and neck surgeons and other medical specialists, therapeutic professionals and the affected persons) and to provide practical recommendations for the diagnostic use of facial nerve electrodiagnostics.

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“…Facial nerve paralysis diagnosis · Prognostic parameters · Electrophysiology · Electromyography · Cranial nerve function (7,(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)9) mA.…”

Section: Introductionmentioning

confidence: 99%

“…Einige Autoren, die Esslens Ergebnisse reproduzieren wollten, kamen jedoch zu deutlich abweichenden Ergebnissen [6,10,11,17].…”

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Zur zeitlichen Inkonstanz der Neuromyographie des Nervus facialis beim Gesunden

Sittel

Guntinas‐Lichius

Eckel

et al. 2000

HNO

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Facial neuromyography is an objective electrophysiologic measurement used to assess prognosis for recovery from facial paralysis. In the present study variability over time of the amplitude ratio in healthy subjects was investigated. Twenty healthy subjects underwent four neuromyographic tests at intervals of one week. The study group consisted of 12 males and 8 females. Ages ranged from 23 to 36 years. The stimulation intensity required for supramaximal stimulation was 14.6 mA on average. The mean of the intra-individual side-to-side difference of the evoked compound action potential was 32.5%. Results of the four repeated tests ranged from no to 80% side-to-side differences in the same individual. The hypothesis of symmetrical evoked facial compound potentials was not supported by our data. As with previous investigators we found significant side-to-side differences in healthy subjects. Furthermore, we could also show for the first time that the amplitude ratio was not constant in every individual at repeated measurements. We conclude that there is a physiological variability that must be taken into account in the interpretation of facial nerve neuromyography.

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Optimizing of Electroneuronography ofthe Facial Nerve

Cited by 8 publications

References 4 publications

Variability of repeated facial nerve electroneurography in healthy subjects

Variability of repeated facial nerve electroneurography in healthy subjects

Facial nerve electrodiagnostics for patients with facial palsy: a clinical practice guideline

Zur zeitlichen Inkonstanz der Neuromyographie des Nervus facialis beim Gesunden

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