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facial nerve monitoring

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https://www.readbyqxmd.com/read/29344780/intraoperative-monitoring-of-z-l-response-zlr-and-abnormal-muscle-response-amr-during-microvascular-decompression-for-hemifacial-spasm-interpreting-the-role-of-zlr
#1
Byung-Chul Son, Hak-Cheol Ko, Jin-Gyu Choi
BACKGROUND: Z-L response (ZLR) has been suggested to a new electromyographic (EMG) potential recorded from the facial muscle of patient with hemifacial spasm (HFS) during microvascular decompression (MVD). Although ZLR has been suggested to be useful, experience of ZLR monitoring is limited and its significance during MVD is still unclear. METHODS: To investigate the significance of ZLR, both ZLR and abnormal muscle response (AMR) were simultaneously recorded before and after decompression of root exit zone (REZ) in 20 consecutive patients with HFS...
January 17, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29334639/vestibular-schwannoma-and-hearing-preservation-usefulness-of-level-specific-ce-chirp-abr-monitoring-a-retrospective-study-on-25-cases-with-preoperative-socially-useful-hearing
#2
Luciano Mastronardi, Ettore Di Scipio, Guglielmo Cacciotti, Raffaelino Roperto
BACKGROUND AND OBJECTIVES: Decision-making regarding the therapy of vestibular schwannoma (VS) changed over the last decades, during which curative microsurgery has been promoted. Goals of VS microsurgery are: extensive resection, facial nerve (FN) preservation and, in selected cases, hearing preservation (HP). The aim of this study is to evaluate postoperative HP with reference to tumor size in patients operated on with Level Specific (LS)-CE-Chirp® ABR monitoring. PATIENTS AND METHODS: Twentyfive consecutive patients with socially useful hearing (SUH) underwent VS microneurosurgery by retrosigmoid (RS) approach...
February 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29315450/facial-nerve-schwannoma-a-case-report-radiological-features-and-literature-review
#3
Giulia Pilloni, Barbara Massa Mico, Roberto Altieri, Francesco Zenga, Alessandro Ducati, Diego Garbossa, Fulvio Tartara
Facial nerve schwannoma localized in the middle fossa is a rare lesion. We report a case of a facial nerve schwannoma in a 30-year-old male presenting with facial nerve palsy. Magnetic resonance imaging (MRI) showed a 3 cm diameter tumor of the right middle fossa. The tumor was removed using a sub-temporal approach. Intraoperative monitoring allowed for identification of the facial nerve, so it was not damaged during the surgical excision. Neurological clinical examination at discharge demonstrated moderate facial nerve improvement (Grade III House-Brackmann)...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29315178/utilization-of-nerve-integrity-monitor-for-promontory-stimulation-testing-prior-to-cochlear-implant
#4
Elizabeth A Kelly, Samuel Levine, Kristin E Gravel, Dianna L Hart, Tina Huang
OBJECTIVE: To demonstrate the feasibility of a nerve integrity monitor as a tool for promontory stimulation testing in patients with profound sensorineural hearing loss considering cochlear implantation. PATIENTS: Adult patients considered for cochlear implantation with no auditory response on audiometric testing INTERVENTION:: Promontory stimulation testing using the nerve integrity monitor. MAIN OUTCOME MEASURE: By using a facial nerve stimulator and the nerve integrity monitor, transtympanic promontory stimulation testing was performed to assess auditory nerve function and determine candidacy for cochlear implantation...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29284876/dexmedetomidine-versus-magnesium-sulfate-in-anesthesia-for-cochlear-implantation-surgery-in-pediatric-patients
#5
Passaint Fahim Hassan, Amany Hassan Saleh
Context: Cochlear implantation surgery represents a great advance in ENT surgeries. Special anesthetic managements were required to provide bloodless surgical field and monitoring of the facial nerve. Aims: We aimed to compare both dexmedetomidine and magnesium sulfate as regards their efficacy in inducing deliberate hypotension and providing better quality of the surgical field during cochlear implantation in pediatrics. Settings and Design: Prospective, randomized double-blinded study...
October 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29279723/diagnostics-and-therapy-of-vestibular-schwannomas-an-interdisciplinary-challenge
#6
REVIEW
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas (VS) expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100,000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
2017: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/29258928/predictive-value-of-intraoperative-facial-motor-evoked-potentials-in-vestibular-schwannoma-surgery-under-2-anesthesia-protocols
#7
Miao Ling, Xiaorong Tao, Siyuan Ma, Xiaocui Yang, Li Liu, Xing Fan, Guijun Jia, Hui Qiao
OBJECTIVE: We sought to validate the feasibility of facial motor evoked potential (FMEP) in facial nerve (FN) monitoring during vestibular schwannoma (VS) surgery under 2 anesthesia protocols and to examine its value for postoperative prognosis. METHODS: This prospective study included 106 patients with VS who underwent microsurgical excision between May 2014 and November 2016 at the Beijing Tiantan Hospital, Capital Medical University, China. All patients were investigated for FMEP elicited by transcranial electrical stimulation in the contralateral facial motor cortex...
December 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29200077/consensus-statement-on-perioperative-use-of-neuromuscular-monitoring
#8
Mohamed Naguib, Sorin J Brull, Aaron F Kopman, Jennifer M Hunter, Béla Fülesdi, Hal R Arkes, Arthur Elstein, Michael M Todd, Ken B Johnson
A panel of clinician scientists with expertise in neuromuscular blockade (NMB) monitoring was convened with a charge to prepare a consensus statement on indications for and proper use of such monitors. The aims of this article are to: (a) provide the rationale and scientific basis for the use of quantitative NMB monitoring; (b) offer a set of recommendations for quantitative NMB monitoring standards; (c) specify educational goals; and (d) propose training recommendations to ensure proper neuromuscular monitoring and management...
November 30, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29192065/peripheral-nerve-function-estimation-by-linear-model-of-multi-cmap-responses-for-surgical-intervention-in-acoustic-neuroma-surgery
#9
Dilok Puanhvuan, Sorayouth Chumnanvej, Yodchanan Wongsawat
Nerve function assessments are crucial for surgical intervention during acoustic neuroma surgery. Cranial nerves such as acoustic and facial nerves, can be possibly damaged during tumor dissection. Proper surgical intervention should prevent neurological deficit and achieve total tumor removal. Conventionally, nerve function is qualitatively evaluated by surgeon and neurologist. Facial nerves can be preserved by monitoring the compound muscle action potential (CMAP) response. The differences in the amplitude and latency of CMAP are used as indicators during surgical interventions...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29177630/intraoperative-monitoring-of-sensory-part-of-the-trigeminal-nerve-using-blink-reflex-during-microvascular-decompression-for-trigeminal-neuralgia
#10
Valentina Simioni, J G Capone, E Sette, E Granieri, M Farneti, M A Cavallo, V Tugnoli
Intraoperative monitoring during cerebellopontine angle surgery is widely accepted. While techniques which monitor cranial motor nerves are commonly used, monitoring the sensory afferents has been challenging. Considering the reflex arc, blink reflex (BR) might be useful in monitoring the sensory part of the trigeminal nerve, the brainstem connections and the facial nerve. We describe the case of a patient who developed hemifacial hypoesthesia after microvascular decompression surgery for trigeminal neuralgia...
January 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29166635/the-protean-neuropsychiatric-and-vestibuloauditory-manifestations-of-neurosarcoidosis
#11
Jacqueline J Greene, Ilka C Naumann, Janet M Poulik, Kevin T Nella, Lindsay Weberling, Jeffrey P Harris, Akihiro J Matsuoka
BACKGROUND: A rare subset of sarcoidosis, neurosarcoidosis, is reported to occur in 5-7% of sarcoid patients and can manifest in a variety of ways. The most common are facial paralysis and optic neuritis, less commonly causing cochleovestibulopathy, blindness, anosmia, and other cranial nerve (CN) palsies. The sensory deficit may be severe and psychiatric symptoms may result from the effects of the disease or steroid treatment. Although MRI-compatible cochlear implants are now available, concerns about the feasibility of recoverable hearing with cochlear implantation in these patients as well as the practical difficulty of disease monitoring due to implant artifact must be considered...
November 23, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29165432/parotid-tumours-clinical-and-oncologic-outcomes-after-microscope-assisted-parotidectomy-with-intraoperative-nerve-monitoring
#12
F Carta, N Chuchueva, C Gerosa, S Sionis, R A Caria, R Puxeddu
Temporary and permanent facial nerve dysfunctions can be observed after parotidectomy for benign and malignant lesions. Intraoperative nerve monitoring is a recognised tool for the preservation of the nerve, while the efficacy of the operative microscope has been rarely stated. The authors report their experience on 198 consecutive parotidectomies performed on 196 patients with the aid of the operative microscope and intraoperative nerve monitoring. 145 parotidectomies were performed for benign lesions and 53 for malignancies...
October 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29094077/quantitative-facial-electromyography-monitoring-after-hypoglossal-facial-jump-nerve-suture
#13
Jan Flasar, Gerd Fabian Volk, Thordis Granitzka, Katharina Geißler, Andrey Irintchev, Thomas Lehmann, Orlando Guntinas-Lichius
Objectives/Hypothesis: The time course of the reinnervation of the paralyzed face after hypoglossal-facial jump nerve suture using electromyography (EMG) was assessed. The relation to the clinical outcome was analyzed. Study Design: Retrospective single-center cohort study. Methods: Reestablishment of motor units was studied by quantitative EMG and motor unit potential (MUP) analysis in 11 patients after hypoglossal-facial jump nerve suture...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29094065/a-cadaver-study-of-mastoidectomy-using-an-image-guided-human-robot-collaborative-control-system
#14
Myung Hoon Yoo, Hwan Seo Lee, Chan Joo Yang, Seung Hwan Lee, Hoon Lim, Seongpung Lee, Byung-Ju Yi, Jong Woo Chung
Objective: Surgical precision would be better achieved with the development of an anatomical monitoring and controlling robot system than by traditional surgery techniques alone. We evaluated the feasibility of robot-assisted mastoidectomy in terms of duration, precision, and safety. Study Design: Human cadaveric study. Materials and Methods: We developed a multi-degree-of-freedom robot system for a surgical drill with a balancing arm. The drill system is manipulated by the surgeon, the motion of the drill burr is monitored by the image-guided system, and the brake is controlled by the robotic system...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29050094/-relationship-between-work-%C3%A2-type-of-congenital-first-branchial-cleft-anomaly-and-facial-nerve-and-surgical-strategies
#15
B Zhang, L S Chen, S L Huang, L Liang, X X Gong, P N Wu, S Y Zhang, X N Luo, J D Zhan, X L Sheng, Z M Lu
Objective: To investigate the relationship between Work Ⅱ type of congenital first branchial cleft anomaly (CFBCA) and facial nerve and discuss surgical strategies. Methods: Retrospective analysis of 37 patients with CFBCA who were treated from May 2005 to September 2016. Among 37 cases with CFBCA, 12 males and 25 females; 24 in the left and 13 in the right; the age at diagnosis was from 1 to 76 ( years, with a median age of 20, 24 cases with age of 18 years or less and 13 with age more than 18 years; duration of disease ranged from 1 to 10 years (median of 6 years); 4 cases were recurren after fistula resection...
October 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29046798/monitoring-of-recurrent-and-superior-laryngeal-nerve-function-using-an-airwayscope%C3%A2-during-thyroid-surgery
#16
Kei Ijichi, Hiroshi Sasano, Megumi Harima, Shingo Murakami
In thyroid surgery, intraoperative identification and preservation of the recurrent laryngeal nerve (RLN) and superior laryngeal nerve external branch (SLNEB) are crucial. Several reports have proposed that electromyography (EMG) monitoring is an acceptable adjunct for identification and preservation of the RLN. However, a limited number of hospitals have access to an EMG monitoring system. Therefore, the development of another viable monitoring method is required. The aim of the present study was to design a new RLN and SLNEB monitoring method combining an Airwayscope™ (AWS) and a facial nerve stimulator...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29042811/optical-inactivation-of-the-anterior-cingulate-cortex-modulate-descending-pain-pathway-in-a-rat-model-of-trigeminal-neuropathic-pain-created-via-chronic-constriction-injury-of-the-infraorbital-nerve
#17
Hyeong Cheol Moon, Won Ik Heo, Yon Ji Kim, Daae Lee, So Yoon Won, Hong Rae Kim, Seung Man Ha, Youn Joo Lee, Young Seok Park
PURPOSE: The anterior cingulate cortex (ACC) plays a critical role in the initiation, development, and maintenance of neuropathic pain. Recently, the effects of optical stimulation on pain have been investigated, but the therapeutic effects of optical stimulation on trigeminal neuralgia (TN) have not been clearly shown. Here, we investigated the effects of optical inhibition of the ACC on TN lesions to determine whether the alleviation of pain affects behavior performance and thalamic neuron signaling...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29036751/-diagnosis-and-management-of-vestibular-schwannomas-an-interdisciplinary-challenge
#18
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100 000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
April 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28984397/intra-arterial-modulation-of-the-trigeminal-nerve-ganglion-in-patients-with-refractory-trigeminal-neuralgia
#19
Adnan I Qureshi, Muhammad A Saleem, Vikram Jadhav, Shawn S Wallery, Faisal Raja
BACKGROUND AND PURPOSE: Nerves and nerve ganglions are supplied by segmental arteries and the vasa nervorum, but the intra-arterial route has not been used for diagnostic or therapeutic purposes. We present the results of intra-arterial delivery of medication for modulating trigeminal nerve ganglion function in patients with refractory trigeminal neuralgia. METHODS: We administered intra-arterial lidocaine in doses up to 50 mg in the middle meningeal artery territory adjacent to the arterial branch that supplies the trigeminal nerve ganglion...
October 6, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28983447/surgical-management-and-outcome-experience-of-53-cerebellopontine-angle-meningiomas
#20
Xiaosheng He, Weiping Liu, Yangang Wang, Jun Zhang, Buqing Liang, Jason H Huang
Background Meningiomas follow schwannomas as the second most common cerebellopontine angle (CPA) tumors. We investigate the diagnosis, management, and prognosis of this disease. Methods We reviewed the cases with the CPA meningiomas in our institution in Shaanxi, China from January 2012 to December 2015. Charts were retrospectively examined and patients were divided into two groups: 1) surgical treatment with a retrosigmoid approach for tumor resection and 2) stereotactic radiosurgery treatment only. Patients were followed up and outpatient records were also reviewed...
August 3, 2017: Curēus
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