Difference between Right and Left Facial Surface Electromyography in Healthy People

Introduction. The study was to see whether there were differences in values of facial surface electromyography in subjects of good heath by muscles, age, and sex. Methods. It draws ratio between lower value and higher value (R-LV/HV) and asymmetry index (AI), based on root mean square (RMS) from measurement of facial surface electromyography (sEMG) in 154 people of healthy people (male:female = 70:84) aging between more than 20 and less than 70. Results. For R-LV/HV, it averages 81.70±14.60% on frontalis muscle, 73.74±19.12% on zygomaticus muscle, and 79.72±14.77% on orbicularis oris muscle. With analysis of the AI average was 10.87±10.14% on frontalis muscle, 16.71±14.79% on zygomaticus muscle, and 12.10±10.05% on orbicularis oris muscle. Both values were statistically significant in three parts of muscles as shown. Both of R-LV/HV and AI show no statistically significant difference on age and sex (p>0.05). Conclusions. It could provide basic data for the future diagnosis of facial nerve palsy patients by measuring facial sEMG values for healthy people.

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Study on the Validity of Surface Electromyography as Assessment Tools for Facial Nerve Palsy

Journal of Pharmacopuncture ◽

10.3831/kpi.2018.21.029 ◽

2018 ◽

Vol 21 (4) ◽

pp. 258-267

Author(s):

Hye-Min Ryu ◽

Seung-Jeong Lee ◽

Eun-Jin Park ◽

Su-Gyeong Kim ◽

Kyeong Han Kim ◽

...

Keyword(s):

Facial Nerve ◽

Surface Electromyography ◽

Nerve Palsy ◽

Facial Nerve Palsy ◽

Assessment Tools

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A comparison of the incidence of facial palsy following parotidectomy performed by ENT and non-ENT surgeons

The Journal of Laryngology & Otology ◽

10.1017/s0022215106002702 ◽

2006 ◽

Vol 121 (1) ◽

pp. 40-43 ◽

Cited By ~ 8

Author(s):

C Y Eng ◽

A S Evans ◽

M S Quraishi ◽

P A Harkness

Keyword(s):

Facial Palsy ◽

Nerve Palsy ◽

Facial Nerve Palsy ◽

District General Hospital ◽

Complication Rates ◽

Retrospective Case ◽

Parotid Surgery ◽

Significant Difference ◽

Benign Histology ◽

The Difference

Objective: To compare the complication rates of parotidectomy operations on benign histology performed by ENT and non-ENT surgeons.Study design and setting: A seven-year (1994–2000) retrospective case notes review of patients undergoing parotidectomy in a United Kingdom district general hospital was performed. Patients with malignant histology were excluded.Participants: Patients were identified from the hospital computer database. One hundred and fifty-nine patients underwent parotidectomy for both benign and malignant conditions over the seven-year period. One hundred and thirty-seven (86 per cent) patients had parotidectomy for benign conditions and were included in this study.Main outcome measures: The presence or absence of facial palsy and other associated complications following parotidectomy surgery in both groups.Results: The temporary facial palsy rates for ENT and non-ENT surgeons were 56 per cent and 57 per cent, respectively. The permanent facial palsy rates for ENT and non-ENT surgeons were 2 per cent and 7 per cent, respectively. Differences in facial palsy were not statistically significant. The difference in other complication rates such as Frey's syndrome, haematoma, salivary fistula, and neuroma were also not statistically significant.Conclusion: Our complication rates were comparable with published results. There was no significant difference in the observed rate of post-operative facial nerve palsy and other known complications following parotid surgery performed by ENT and non-ENT surgeons.

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Correlation between Surface Electromyography and Conventional Electromyography in Facial Nerve Palsy

Jouranl of Korean Association of EMG Electrodiagnostic Medicine ◽

10.18214/jkaem.2018.20.2.84 ◽

2018 ◽

Vol 20 (2) ◽

pp. 84-90

Author(s):

Haneul Jang ◽

Jongha Lee ◽

Yunsoo Soh ◽

Jung Ho Kwon ◽

Jinmann Chon ◽

...

Keyword(s):

Facial Nerve ◽

Surface Electromyography ◽

Nerve Palsy ◽

Facial Nerve Palsy

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Waveform reliability with different recording electrode placement in facial electroneuronography

The Journal of Laryngology & Otology ◽

10.1258/002221504323219527 ◽

2004 ◽

Vol 118 (6) ◽

pp. 421-425 ◽

Cited By ~ 2

Author(s):

Won-Ho Chung ◽

Jong-Chan Lee ◽

Do Yeon Cho ◽

Eun Young Won ◽

Yang-Sun Cho ◽

...

Keyword(s):

Facial Nerve ◽

Nerve Palsy ◽

Facial Nerve Palsy ◽

Skin Resistance ◽

Nerve Degeneration ◽

Electrode Placement ◽

Nasolabial Fold ◽

Recording Electrode ◽

Nasal Ala ◽

Significant Difference

Electroneuronography (ENoG) has become a useful test for estimating the degree of facial nerve degeneration and predicting the prognosis in patients with facial nerve palsy. Test results may be influenced by several factors, including the electrode positions, skin resistance, stimulus magnitude, and possible artifacts. Regarding recording electrode positions, different groups have used two different locations, the nasolabial fold and nasal ala. The authors compared the waveforms recorded from these two locations in ENoG recordings to obtain the optimal waveform. Twenty healthy volunteers and 25 patients with unilateral facial nerve palsy were included in this study. Recordings were carried out with the recording electrode placed on the nasolabial fold, followed by placement on the nasal ala after 10 minutes. The following parameters were assessed: (1) the supramaximal threshold, (2) amplitude and shape of the waveform, (3) interside difference, and (4) test-retest variability. There was no significant difference in the amplitude of the waveform, interside difference, and test-retest variability between the two groups. However, when the electrode was placed on the nasal ala, the threshold was significantly lower, an ideal biphasic configuration was present in almost all cases (97.5 per cent) of normal volunteers and it was easier to identify the waveform. Placement of the recording electrode on the nasal ala would be the preferred method.

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