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facial nerve monitoring

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https://www.readbyqxmd.com/read/27915063/preoperative-prediction-of-the-location-and-shape-of-the-facial-nerve-in-patients-with-large-vestibular-schwannomas-using-diffusion-tensor-imaging-based-fiber-tracking
#1
Yanyang Zhang, Zhiqi Mao, Penghu Wei, Yazhou Jin, Lin Ma, Jun Zhang, Xinguang Yu
OBJECTIVE: Preserving the facial nerve (FN) during surgery for large vestibular schwannomas (VSs) is challenging because of the unpredictable locations and morphological changes in the FN. Diffusion tensor imaging-based fiber tracking (DTI-FT) has been proposed to preoperatively visualize the FN. This study was performed to evaluate the efficacy of DTI-FT for predicting FN location and shape in patients with large VSs. METHODS: In this prospective study, imaging data from 30 consecutive patients with large VSs were obtained using 3-T magnetic resonance imaging...
November 30, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27893549/how-deleterious-is-facial-nerve-dissection-for-the-facial-nerve-in-parotid-surgery-an-electrophysiological-evaluation
#2
Sabri Baki Eren, Remzi Dogan, Orhan Ozturan, Bayram Veyseller, Ayşenur Meriç Hafiz
OBJECTIVE: This study was conducted to investigate subclinical electrophysiological deleterious effect due to microtrauma to the nerve in response to the dissection of a tumor and parotid tissue from the facial nerve and its branches and surgical traction experienced during the operation. METHODS: The study included 34 adult patients who underwent parotidectomy operations under intraoperative facial nerve monitoring. Three measurements were taken from each patient to evaluate facial nerve functions, with 3 stimuli of different intensities applied with different timing...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27882508/regional-early-development-and-eruption-of-permanent-teeth-case-report
#3
A M Al Mullahi, A Bakathir, S Al Jahdhami
BACKGROUND: Early development and eruption of permanent teeth are rarely reported in scientific literature. Early eruption of permanent teeth has been reported to occur due to local factors such as trauma or dental abscesses in primary teeth, and in systemic conditions. Congenital diffuse infiltrating facial lipomatosis (CDIFL) is a rare condition that belongs to a group of lipomatosis tumours. In this disorder, the mature adipocytes invade adjacent soft and hard tissues in the facial region...
November 23, 2016: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27835757/vaccine-strain-herpes-zoster-found-in-the-trigeminal-nerve-area-in-a-healthy-child-a-case-report
#4
Sayaka Iwasaki, Kouji Motokura, Yoshitaka Honda, Masamitsu Mikami, Daisuke Hata, Atsuko Hata
A previously healthy 2-year-old girl, vaccinated for varicella at 17 months, was admitted because of left-sided facial herpes zoster caused by vaccine-strain varicella-zoster virus (VZV). She recovered fully with no complication after intravenous treatment using acyclovir. Earlier reports have described that herpes zoster (HZ) rashes caused by vaccine-strain VZV tend to occur on the dermis corresponding to the skin area where the varicella vaccine was received. However, rashes appeared on this girl only in the trigeminal nerve area, which is unrelated to the vaccinated site...
November 3, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27757354/the-lesser-palatine-nerve-innervates-the-levator-veli-palatini-muscle
#5
Hideaki Kishimoto, Yoshitaka Matsuura, Katsuya Kawai, Shigehito Yamada, Shigehiko Suzuki
When the lesser palatine nerve (LPN) is supposed to be a branch of the trigeminal nerve and innervate sensation of the soft palate, whether the LPN contains motor fibers is unclear. In this study, we monitored the electromyogram of the levator veli palatini (LVP) muscle on stimulating the LPN during palatoplasty in 3 patients. The electromyogram of the muscles showed the myogenic potential induced by electrostimulation of the LPN. Taken together with the finding from our previous anatomical study that the motor fibers come from the facial nerve, this result supports the double innervation theory of the LVP, which posits that both the pharyngeal plexus and the facial nerve innervate it...
September 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27753086/high-variability-of-facial-muscle-innervation-by-facial-nerve-branches-a-prospective-electrostimulation-study
#6
Ashraf Raslan, Gerd Fabian Volk, Martin Möller, Vincent Stark, Nikolas Eckhardt, Orlando Guntinas-Lichius
OBJECTIVES/HYPOTHESIS: To examine by intraoperative electric stimulation which peripheral facial nerve (FN) branches are functionally connected to which facial muscle functions. STUDY DESIGN: Single-center prospective clinical study. METHODS: Seven patients whose peripheral FN branching was exposed during parotidectomy under FN monitoring received a systematic electrostimulation of each branch starting with 0.1 mA and stepwise increase to 2 mA with a frequency of 3 Hz...
October 18, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27695545/facial-functional-outcome-in-monitored-versus-not-monitored-patients-in-vestibular-schwannomas-surgery
#7
Graziano Taddei, Alfonso Marrelli, Donatella Trovarelli, Alessandro Ricci, Renato J Galzio
OBJECTIVE: Even though advances in surgical techniques have improved facial nerve outcomes, functional preservation is still an issue because injury to the facial nerve has significant physical and psychological consequences for the patient. We retrospectively review our data in VS surgery to compare the facial outcome in intraoperative facial monitored versus not-monitored patients. MATERIALS AND METHODS: 51 consecutive patients with unilateral vestibular schwannoma in the period from 2005 to 2010 were treated in our Institution...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27661064/iatrogenic-facial-nerve-injuries-during-chronic-otitis-media-surgery-a-multicentre-retrospective-study
#8
T Linder, S Mulazimoglu, T El Hadi, V Darrouzet, D Ayache, T Somers, S Schmerber, C Vincent, M Mondain, E Lescanne, D Bonnard
OBJECTIVES: To give an insight into why, when and where iatrogenic facial nerve (FN) injuries may occur and to explain how to deal with them in an emergency setting. DESIGN AND SETTING: Multicentre retrospective study in eight tertiary referral hospitals over 17 years. PARTICIPANTS: Twenty patients with partial or total FN injury during surgery for chronic otitis media (COM) were revised. MAIN OUTCOME MEASURES: Indication and type of surgery, experience of the surgeon, intra- and postoperative findings, value of CT scanning, patient management and final FN outcome were recorded...
September 23, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27648655/useful-method-for-intraoperative-monitoring-of-facial-nerve-in-a-scarred-bed
#9
Bilge Kagan Aysal, Abdulkerim Yapici, Yalcin Bayram, Fatih Zor
Facial nerve is the main cranial nerve for the innervation of facial expression muscles. Main trunk of facial nerve passes approximately 1 to 2 cm deep to tragal pointer. In some patients, where a patient has multiple operations, fibrosis due to previous operations may change the natural anatomy and direction of the branches of facial nerve. A 22-year-old male patient had 2 operations for mandibular reconstruction after gunshot wound. During the second operation, there was a possible injury to the marginal mandibular nerve and a nerve stimulator was used intraoperatively to monitor the nerve at the tragal pointer because the excitability of the distal segments remains intact for 24 to 48 hours after nerve injuries...
October 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27626078/how-to-avoid-facial-nerve-injury-in-mastoidectomy
#10
REVIEW
Nam-Gyu Ryu, Jin Kim
Unexpected iatrogenic facial nerve paralysis not only affects facial disfiguration, but also imposes a devastating effect on the social, psychological, and economic aspects of an affected person's life at once. The aims of this study were to postulate where surgeons had mistakenly drilled or where obscured by granulations or by fibrous bands and to look for surgical approach with focused on the safety of facial nerve in mastoid surgery. We had found 14 cases of iatrogenic facial nerve injury (IFNI) during mastoid surgery for 5 years in Korea...
September 2016: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/27602336/facial-nerve-monitoring-during-parotidectomy-a-two-center-retrospective-study
#11
Stanislas Ballivet-de Régloix, Julia Grinholtz-Haddad, Olga Maurin, Louise Genestier, Quentin Lisan, Yoann Pons
INTRODUCTION: We present a retrospective two-center study series and discussion of the current literature to assess the benefits of facial nerve monitoring during parotidectomy. MATERIALS AND METHODS: From 2007 to 2012, 128 parotidectomies were performed in 125 patients. Of these, 47 procedures were performed without facial nerve monitoring (group 1) and 81 with facial nerve monitoring (group 2). The primary endpoint was the House-Brackmann classification at 1 month and 6 months...
July 2016: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27567997/percutaneous-ct-guided-cryoablation-of-the-salivary-glands-in-a-porcine-model
#12
Ji Y Buethe, Salim Abboud, Kristie Brock, Greg Nizialek, Rod Rezaee, Jay Wasman, Jonathan Frankel, Dean A Nakamoto
PURPOSE: To evaluate the imaging, histologic changes and safety of computed tomography (CT)-guided cryoablation of the parotid glands in a porcine model. MATERIALS AND METHODS: Unilateral CT-guided parotid gland cryoablation was performed in 5 juvenile miniature pigs. The ablated parotid glands underwent 2 cycles of 10-minute freeze and 5-minute thaw using three 17-g cryoprobes. The animals were monitored daily for complications including pain, frostbite, infection, and sialocele or fistula formation...
December 2016: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/27525626/role-of-facial-nerve-motor-evoked-potential-ratio-in-predicting-facial-nerve-function-in-vestibular-schwannoma-surgery-both-immediate-and-at-1-year
#13
Sanjiv K Bhimrao, Trung N Le, Charles C Dong, Serge Makarenko, Sarin Wongprasartsuk, Brian D Westerberg, Ryojo Akagami
OBJECTIVE: To determine whether transcranial electrical stimulation-induced facial motor-evoked potential (FMEP) monitoring of the facial nerve (FN) during vestibular schwannoma (VS) tumor resection can predict both immediate and 1 year postoperative FN functional outcome. DESIGN: Prospective consecutive non-comparative observational case series. SETTING: Tertiary referral center. MAIN OUTCOME MEASURES: Facial function, immediate post operation and at 1 year using House-Brackmann (HB) grading scale...
September 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27379841/insertion-of-intra-oral-electrodes-for-cranial-nerve-monitoring-using-a-crowe-davis-retractor
#14
Terrence L Trentman, Christopher Thunberg, Andrew Gorlin, Antoun Koht, Richard S Zimmerman, Bernard Bendok
Acoustic neuroma resection is an example of a neurosurgical procedure where the brainstem and multiple cranial nerves are at risk for injury. Electrode placement for monitoring of the glossopharyngeal and hypoglossal nerves during acoustic neuroma resection can be challenging. The purpose of this report is to illustrate the use of a device for intra-oral electrode placement for intraoperative monitoring of the glossopharyngeal and hypoglossal nerves. A 60-year-old male presented for acoustic neuroma resection...
July 5, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27345873/-the-surgical-management-of-giant-intracranial-vestibular-schwannoma-via-retrosigmoid-approach-a-retrospective-review-of-657-cases
#15
X Huang, K Y Ji, J Xu, C H Shao, W Wang, M Xu, D Q Chen, M Y Chen, P Zhong
OBJECTIVE: To discuss the surgical technique and common complications from the microsurgical treatment of giant intracranial vestibular schwannoma via suboccipital retrosigmoid approach and to propose strategies for minimizing such complications. METHODS: Surgical outcomes and complications were evaluated in a consecutive series of 657 unilateral giant vestibular schwannomas treated in Shanghai Huashan Hospital via suboccipital retrosigmoid approach from 1999 to 2014...
June 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27342645/use-of-sugammadex-in-parotid-surgery-a-case-report
#16
Mustapha Bensghir, Abdelghafour Elkoundi, Redouane Ahtil, Mohammed Meziane, Charki Haimeur
BACKGROUND: Parotid surgery is a common ear, nose, and throat procedure. Facial nerve paralysis is the main feared complication following this surgery. To avoid this paralysis, intraoperative facial nerve monitoring is often used, but neuromuscular blocking agents interfere with this technique. Therefore, the neuromuscular blocking agent used should have a short duration of muscle relaxation. With the discovery of sugammadex, a steroidal neuromuscular blocking agent has acquired the potential to be used in place of succinylcholine...
2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27312936/selective-stimulation-of-facial-muscles-with-a-penetrating-electrode-array-in-the-feline-model
#17
Ronald Sahyouni, Jay Bhatt, Hamid R Djalilian, William C Tang, John C Middlebrooks, Harrison W Lin
OBJECTIVES/HYPOTHESIS: Permanent facial nerve injury is a difficult challenge for both patients and physicians given its potential for debilitating functional, cosmetic, and psychological sequelae. Although current surgical interventions have provided considerable advancements in facial nerve rehabilitation, they often fail to fully address all impairments. We aim to introduce an alternative approach to facial nerve rehabilitation. STUDY DESIGN: Acute experiments in animals with normal facial function...
June 16, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27310887/association-between-facial-nerve-monitoring-with-postoperative-facial-paralysis-in-parotidectomy
#18
Eleftherios Savvas, Steffen Hillmann, Daniel Weiss, Mario Koopmann, Claudia Rudack, Jürgen Alberty
IMPORTANCE: Electrophysiologic facial nerve monitoring is becoming an established intraoperative aid to assist the surgeon in facial nerve trunk or branch location and dissection. Limited studies have addressed the postoperative outcomes of parotid surgery with and without monitoring. OBJECTIVE: To examine the influence of intraoperative facial nerve monitoring on postoperative facial nerve function and procedure duration in parotid surgery. DESIGN, SETTING, AND PARTICIPANTS: An 8-year retrospective review of parotidectomies performed at the Department of Otorhinolaryngology-Head and Neck Surgery, University of Münster...
September 1, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27301896/nervus-intermedius-symptoms-following-surgical-or-radiation-therapy-for-vestibular-schwannoma
#19
Kathryn Y Noonan, Cong Rang, Katherine Callahan, Nathan E Simmons, Kadir Erkmen, James E Saunders
OBJECTIVES: This study compares the functional outcomes of nevus intermedius impairment following surgery, radiation, or observation for the treatment of vestibular schwannoma. STUDY DESIGN: Retrospective cohort study. SETTINGS: Tertiary care medical center. SUBJECTS AND METHODS: We retrospectively examined 141 charts of patients with a vestibular schwannoma seen in the Dartmouth-Hitchcock Acoustic Neuroma Clinic between 2012 and 2014...
October 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27177175/analysis-of-facial-motor-evoked-potentials-for-assessing-a-central-mechanism-in-hemifacial-spasm
#20
Marshall F Wilkinson, Tumul Chowdhury, W Alan Mutch, Anthony M Kaufmann
OBJECTIVE Hemifacial spasm (HFS) is a cranial nerve hyperactivity disorder characterized by unique neurophysiological features, although the underlying pathophysiology remains disputed. In this study, the authors compared the effects of desflurane on facial motor evoked potentials (MEPs) from the spasm and nonspasm sides of patients who were undergoing microvascular decompression (MVD) surgery to test the hypothesis that HFS is associated with a central elevation of facial motor neuron excitability. METHODS Facial MEPs were elicited in 31 patients who were undergoing MVD for HFS and were administered total intravenous anesthesia (TIVA) with or without additional desflurane, an inhaled anesthetic known to centrally suppress MEPs...
May 13, 2016: Journal of Neurosurgery
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