Prognosis prediction changes based on the timing of electroneurography after facial paralysis

Kwon, Ki Jin; Bang, Je Ho; Kim, Sang Hoon; Yeo, Seung Geun; Byun, Jae-Yong

doi:10.1080/00016489.2021.1976417

Cited by 4 publications

(4 citation statements)

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“…Also, orbicularis oris is innervated by the mandibular branch of the facial nerve which has to be studied in detail in future studies. Our result was different from the findings of Kwon et al [ 7 ] where the temporal branch was affected more by the resultant increased amplitude drop.…”

Section: Discussioncontrasting

confidence: 99%

“…The classic features of BP are forehead wrinkling, ptosis of the eyebrow, drooping mouth corner, flattening of the nasolabial fold, and incomplete closure of eyelids, pain in the neck. Evaluating BP's prognosis is crucial to formulating treatment plans and improving quality of life [7]. The objective evaluation of nerve degeneration is measured using electroneurography (ENoG), which was first described by Erlo Esslen in 1973 [8] and was further popularized by Ugo Fisch in analyzing nerve degeneration amongst individuals with BP.…”

Section: Introductionmentioning

confidence: 99%

“…Evaluating BP’s prognosis is crucial to formulating treatment plans and improving quality of life [ 7 ]. The objective evaluation of nerve degeneration is measured using electroneurography (ENoG), which was first described by Erlo Esslen in 1973 [ 8 ] and was further popularized by Ugo Fisch in analyzing nerve degeneration amongst individuals with BP.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Nerve Conduction in Patients With Lower Motor Neuron Facial Paralysis

Poornachitra¹,

Muthukrishnan²

2023

Cureus

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IntroductionBell's palsy (BP), a lower motor neuron facial paralysis, commonly causes dysfunction of muscles of facial expression. Nerve conduction electrodiagnostic studies differentiate early-stage minor conduction blocks from later-stage Wallerian degeneration. Nerve conduction studies (NCSs) assess facial nerve function by delivering supramaximal electrical stimulus at the stylomastoid foramen. The amplitude loss percentage of the affected side is calculated with reference to the normal side. AimThe study's aim was to characterize the ncs in BP cases and to evaluate the correlation between the Compound Muscle Action Potential (CMAP) of the muscles affected. Materials and methodsOne hundred and four NCS data of BP cases were retrospectively collected over the period of two years. Statistical analyses of variables were done using the Chi-square test, one-way ANOVA, and Pearson correlation coefficient. ResultThe greater amplitude loss was seen in the orbicularis oris muscle innervated by buccal and mandibular branches of the facial nerve. The bivariate correlation between the Right Nasalis versus Right Orbicularis Oculi and Left Orbicularis Oculi versus Left Nasalis showed a highly significant moderately Strong Positive Correlation with an R-value of 0.687 and 0.558, respectively. The amplitude drop percentage was statistically significant in the affected left and right sides with P values of 0.008 and 0.007 respectively (P value < 0.05). The amplitude drop between the nasalis, orbicularis oculi and orbicularis oris muscles of both sides was statistically significant with a P value of 0.001. ConclusionNCS should be mandatorily included as an assessment protocol in BP cases for quantification of nerve degeneration and as a prognostic tool during the course of treatment.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of Nerve Conduction in Patients With Lower Motor Neuron Facial Paralysis

Poornachitra¹,

Muthukrishnan²

2023

Cureus

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“…ENoG and EMG are now the most important facial electrophysiological examinations [ 26 , 27 ]. ENoG involves recording the compound muscle action potentials (CMAPs) and latencies of muscles, including orbicularis oculi, frontalis muscle, orbicularis oris, and ala nasi muscle [ 28 , 29 ]. A percentage of degenerated nerve fibers is calculated by the amplitude of the CMAPs, a side difference of 30% or greater is considered pathologic [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

Laser acupuncture and photobiomodulation therapy in Bell’s palsy with a duration of greater than 8 weeks: a randomized controlled trial

Wu,

Lan,

Litscher

et al. 2024

Lasers Med Sci

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To investigate the efficacy of laser acupuncture and photobiomodulation therapy in alleviating symptoms among patients diagnosed with Bell’s palsy with duration of greater than 8 weeks. The randomized controlled trial has been performed from May 2021 to April 2023. Patients were eligible who had Bell’s palsy with duration of greater than 8 weeks on out-patient Department of Otorhinolaryngology in Beijing Tongren Hospital. The laser acupuncture group received class IV laser treatment for 3 times per weeks, a total of 72 times. The control group received the same treatment procedure except the laser parameter. The primary outcome measures comprised House–Brackmann facial nerve grading system and electroneurography. Secondary outcome measures comprised Sunnybrook facial grading system, electromyography, and the blink reflex. A total of 84 participants were included (42 control group, 42 laser acupuncture group). After treatment, House–Brackmann facial nerve grading system (OR, 0.11; 95% CI, 0.04–0.30; P < 0.001), and the pathologic numbers of electroneuronography were statistically different between the laser acupuncture group and control group, including orbicularis oculi (OR,0.08; 95% CI, 0.02–0.21; P < 0.001), Frontalis muscle (OR,0.14; 95% CI, 0.05–0.39; P < 0.001), Orbicularis oris (OR,0.13; 95% CI, 0.04–0.36; P < 0.001), Ala nasi muscle (OR,0.06; 95% CI, 0.02–0.18; P < 0.001). In secondary outcomes, Sunnybrook facial grading system, has significant difference between the two groups (20.26; 95% CI, 14.69 to 25.83; P < 0.01). Latency by ENoG, include orbicularis oculi (-0.61; 95% CI, -0.43 to -0.09; P < 0.001), frontalis muscle (-0.12; 95% CI, -0.21 to -0.03; P < 0.01), orbicularis oris (-0.28; 95% CI, -0.41 to -0.16; P < 0.001), and ala nasi muscle (-0.26; 95% CI, -0.38 to -0.16; P < 0.001). All amplitudes of MUAPs and durations by electromyography (EMG) showed statistically significant differences compared with the control group after treatment. For the frontalis muscle, the amplitude of MUAPs was -64.23 (95% CI, -80.89 to -47.56; P < 0.001) and duration was -1.18 (95% CI, -1.49 to -0.87; P < 0.001). For orbicularis oris, amplitude of MUAPs was -29.82 (95% CI, -55.03 to -4.62; P = 0.02) and duration was -0.57 (95% CI, -0.94 to -0.20; P < 0.001). For depressor angulli oris, amplitude of MUAPs was -47.06 (95% CI, -62.15 to -31.97; P < 0.001) and duration was -2.21 (95% CI, -2.69 to -1.72; P < 0.001). Blink reflex, including R1 (OR, 0.03; 95% CI, 0.01–0.16; P < .001), R2 (OR, 0.04; 95% CI, 0.004–0.29; P < .001), and R2 latency differences (OR, 0.15; 95% CI, 0.05–0.51; P < .001), have significant difference between the two groups, respectively. The findings suggest that laser acupuncture relieve symptoms for patients with Bell’s palsy with a duration of greater than 8 weeks.Trial registration: ClinicalTrials.gov Identifier: NCT05846217.

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Clinical and electrophysiological prognostic factors in predicting poor outcomes in patients with idiopathic facial nerve paralysis

Zheng

2024

Journal of Clinical Neuroscience

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Prognosis prediction changes based on the timing of electroneurography after facial paralysis

Cited by 4 publications

References 13 publications

Assessment of Nerve Conduction in Patients With Lower Motor Neuron Facial Paralysis

Assessment of Nerve Conduction in Patients With Lower Motor Neuron Facial Paralysis

Laser acupuncture and photobiomodulation therapy in Bell’s palsy with a duration of greater than 8 weeks: a randomized controlled trial

Clinical and electrophysiological prognostic factors in predicting poor outcomes in patients with idiopathic facial nerve paralysis

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