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Neurophysiology intraoperative monitoring

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https://www.readbyqxmd.com/read/28805756/-an-experience-of-neurophysiological-monitoring-in-neurosurgery
#1
A G Vasyatkina, E A Levin, K Yu Orlov, V V Kobozev
AIM: To evaluate the efficacy of neuromonitoring methods in prevention of postoperative neurological complications and estimation of predictive power of intraoperative changes in monitored characteristics. MATERIAL AND METHODS: Retrospective study examined 240 patients, operated in the years 2014-2015 using intraoperative neurophysiological monitoring. One hundred and seventy-three patients suffered from hemispheric lesions and 67 had lesions located in or near the brainstem...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28766024/usefulness-of-intraoperative-electromyographic-monitoring-of-oculomotor-and-abducens-nerves-during-skull-base-surgery
#2
Zi-Yi Li, Ming-Chu Li, Jian-Tao Liang, Yu-Hai Bao, Ge Chen, Hong-Chuan Guo, Feng Ling
BACKGROUND: Intraoperative neurophysiologic monitoring of the extraocular cranial nerve (EOCN) is not commonly performed because of technical difficulty and risk, reliability of the result and predictability of the postoperative function of the EOCN. METHODS: We performed oculomotor nerve (CN III) and abducens nerve (CN VI) intraoperative monitoring in patients with skull base surgery by recording the spontaneous muscle activity (SMA) and compound muscle action potential (CMAP)...
August 2, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28761524/selective-dorsal-rhizotomy-a-multidisciplinary-approach-to-treating-spastic-diplegia
#3
Hussam Abou Al-Shaar, Muhammad Tariq Imtiaz, Hazem Alhalabi, Shara M Alsubaie, Abdulrahman J Sabbagh
BACKGROUND: Spasticity is a motor disorder that interferes with mobility and affects the quality of life. Different approaches have been utilized to address patients with spastic diplegia, among which is selective dorsal rhizotomy (SDR). Although SDR has been shown to be efficacious in treating spastic patients, many neurologists and neurosurgeons are not well aware of the procedure, its indications, and expected outcomes due to the limited number of centers performing this procedure...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28758184/motor-evoked-potentials-and-bis-guided-anaesthesia-in-image-guided-mini-invasive-neurosurgery-of-supratentorial-tumors-nearby-the-cortico-spinal-tract
#4
Roberto Cordella, Eleonora Orena, Francesco Acerbi, Elena Beretta, Dario Caldiroli, Francesco Dimeco, Carla Carozzi
AIM: to describe and evaluate the anaesthesiological regimen used in neurophysiologically monitored image-guided mini-invasive neurosurgery. MATERIAL AND METHODS: 24 patients underwent elective surgery under general anaesthesia that was administered through Target Controlled Infusion (TCI) for effect-site concentration (Ce) of Propofol and Remifentanil, targeting Bispectral Index (BIS) in the 40-60 intervals. Stimulating intensity of transcranial motor evoked potentials (tMEP), BIS index, Propofol and Remifentanil Ce were collected at MEPs threshold (T) definition (respectively BIS@T, CeProp@T and CeRemi@T)...
June 14, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28719456/warning-criteria-for-intraoperative-neurophysiologic-monitoring
#5
Quanmeng Liu, Qinzhou Wang, Hongen Liu, William K K Wu, Matthew T V Chan
PURPOSE OF REVIEW: Intraoperative changes in somatosensory (SEP) and motor evoked potentials (MEPs) may indicate potential injury to the spinal cord and will require timely intervention to prevent permanent damage. This review focuses on the validity of currently recommended warning criteria for intraoperative evoked potential monitoring. RECENT FINDINGS: Current guideline recommends a decrease in SEP amplitude by 50% and MEP amplitude by 50-100% as warning signals for injury to the ascending sensory and descending motor pathway, respectively...
July 15, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28713053/perils-of-intraoperative-neurophysiological-monitoring-analysis-of-false-negative-results-in-spine-surgeries
#6
Arvydas A Tamkus, Kent S Rice, Michael T McCaffrey
BACKGROUND CONTEXT: Although some authors have published case reports describing false negatives in intraoperative neurophysiological monitoring (IONM), a systematic review of causes of false-negative IONM results is lacking. PURPOSE: The objective of this study was to analyze false-negative IONM findings in spine surgery. STUDY DESIGN: This is a retrospective cohort analysis. PATIENT SAMPLE: A cohort of 109 patients with new postoperative neurologic deficits was analyzed for possible false-negative IONM reporting...
July 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28689398/an-electrode-configuration-for-recording-muscle-motor-evoked-potentials-in-the-upper-extremities-during-intraoperative-neurophysiological-monitoring
#7
Young-Doo Choi, Seung-Hyun Jin, Chi-Heon Kim, Gil Ho Kwak, Bo Eun Kim, Chun Kee Chung
OBJECTIVE: The main aim of the present study is to examine the electrode configurations used to record the muscle motor evoked potential (mMEP) in the upper extremities during surgery with the goal of producing a high and stable mMEP signal, in particular among the abductor pollicis brevis (APB), abductor digiti minimi (ADM), and across the APB-ADM muscles, which have been widely used for the mMEP in the upper extremities. METHODS: Thirty right-handed patients were recruited in this prospective study...
July 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28676974/long-term-evaluation-of-intraoperative-neurophysiological-monitoring-assisted-tethered-cord-surgery
#8
S E Dulfer, G Drost, F Lange, H L Journee, F H Wapstra, E W Hoving
PURPOSE: Patients with tethered spinal cord have been investigated for short-term effects after tethered spinal cord surgery in the past. However, little is known about the long-term effects in this patient group. In this retrospective, longitudinal, observational study, a patient sample of a previous report of 65 patients was reassessed to observe the long-term effects of intraoperative neurophysiological monitoring-assisted tethered cord surgery. METHODS: With the use of patient charts and a survey, patients were scored on four domains: (1) neurological deficits, (2) urological deficits, (3) pain symptoms, and (4) orthopedic deficits...
July 4, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28660107/optimal-timing-of-surgery-for-intramedullary-cavernous-hemangioma-of-the-spinal-cord-in-relation-to-preoperative-motor-paresis-disease-duration-and-tumor-volume-and-location
#9
Shiro Imagama, Zenya Ito, Kei Ando, Kazuyoshi Kobayashi, Tetsuro Hida, Kenyu Ito, Mikito Tsushima, Yoshimoto Ishikawa, Akiyuki Matsumoto, Masayoshi Morozumi, Satoshi Tanaka, Masaaki Machino, Kyotaro Ota, Hiroaki Nakashima, Norimitsu Wakao, Yoshihito Sakai, Yukihiro Matsuyama, Naoki Ishiguro
STUDY DESIGN: Prospective study. OBJECTIVE: Investigate factors associated with preoperative motor paresis, recovery, ambulatory status, and intraoperative neurophysiological monitoring (IONM) among patients with no preoperative paresis (N group), complete preoperative motor recovery (CR group), and no complete recovery (NCR group) in patients with intramedullary spinal cavernous hemangioma to determine the optimal timing of surgery. METHODS: The study evaluated 41 surgical cases in our institute...
May 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28650882/diagnostic-utility-of-intraoperative-neurophysiological-monitoring-for-intramedullary-spinal-cord-tumors-systematic-review-and-meta-analysis
#10
Tej D Azad, Arjun V Pendharkar, Viet Nguyen, James Pan, Ian D Connolly, Anand Veeravagu, Rita Popat, John K Ratliff, Gerald A Grant
STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVE: The aim of this study was to systematically evaluate the diagnostic utility of intraoperative neurophysiological monitoring (IONM) for detecting postoperative injury in resection of intramedullary spinal cord tumors (IMSCT). SUMMARY OF BACKGROUND DATA: Surgical management of IMSCT can involve key neurological and vascular structures. IONM aims to assess the functional integrity of susceptible elements in real time...
June 23, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28650602/intraoperative-neurophysiological-monitoring-to-protect-the-facial-nerve-during-microsurgery-for-large-vestibular-schwannomas
#11
(no author information available yet)
OBJECTIVE: Microsurgery is the preferred treatment for large vestibular schwannomas (VSs). However, anatomical and functional preservation of the facial nerve (FN) remains a challenge during this surgery. The aim of this study was to determine whether it is beneficial to the preservation rates of the FN during microsurgical treatment of large VSs using intraoperative neurophysiological monitoring (IONM). METHODS: We retrospectively reviewed 53 patients with large VSs that underwent microsurgical resection via the retrosigmoid approach in our department during April 2009 to March 2016...
May 26, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28620788/comparison-of-intraoperative-neurophysiologic-monitoring-outcomes-between-cervical-and-thoracic-spine-surgery
#12
Shujie Wang, Yuan Tian, Xiangquan Lin, Zhifu Ren, Yu Zhao, Jiliang Zhai, Xiaojuan Zhang, Yanwei Zhao, Yingyue Dong, Congran Zhao, Ye Tian
PURPOSE: The objective is to compare the intraoperative monitoring (IOM) outcomes between degenerative cervical and thoracic spine decompression surgery. METHOD: A total of 97 patients with cervical compression myelopathy (CCM) and 75 patients with thoracic compression myelopathy (TCM) were prospectively collected between December 2012 and June 2015 in our spine center. Somatosensory-evoked potentials (SSEP) and motor-evoked potentials (MEP) were used for IOM. The postoperative neurologic status of each patient was assessed immediately after surgery...
June 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28571911/a-spotlight-on-intraoperative-neurophysiological-monitoring-of-the-lower-brainstem
#13
EDITORIAL
Francesco Sala
No abstract text is available yet for this article.
July 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28534074/facial-nerve-sparing-surgery-for-large-vestibular-schwannomas
#14
Paolo Ferroli, Lorenzo Bosio, Morgan Broggi
BACKGROUND: Nowadays, there is a general trend in vestibular schwannoma (VS) surgery favoring near-total or subtotal tumor resection (NTR/STR) with facial nerve (FN) function preservation rather than gross total resection (GTR) with high risk of FN damage. METHODS: The surgical technique of FN sparing in large VS includes patient-tailored image-guided craniotomy, continuous intraoperative neurophysiological monitoring (INM), intracapsular wide tumor debulking, and only final extracapsular dissection with FN course identification and brainstem decompression...
July 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28532908/the-safety-and-efficiency-of-pvcr-without-anterior-support-applied-in-treatment-of-yang-type-a-severe-thoracic-kyphoscoliosis
#15
Wen-Yuan Sui, Zi-Fang Huang, Yao-Long Deng, Heng-Wei Fan, Jing-Fan Yang, Fo-Bao Li, Jun-Lin Yang
OBJECTIVE: To assess the clinical and radiographic outcomes of posterior vertebral column resection (PVCR) without anterior support in treatment of Yang type A severe rigid thoracic kyphoscoliosis. METHODS: The records of 27 Yang type A severe thoracic kyphoscoliosis patients treated with PVCR without anterior support from January 2010 to September 2013 were analyzed retrospectively. Intraoperative multimodal neurophysiological monitoring was conducted in all patients...
August 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526648/somatosensory-evoked-potentials-during-temporary-arterial-occlusion-for-intracranial-aneurysm-surgery-predictive-value-for-perioperative-stroke
#16
Ahmed I Kashkoush, Brian T Jankowitz, Paul Gardner, Robert M Friedlander, Yue-Fang Chang, Donald J Crammond, Jeffrey R Balzer, Parthasarathy D Thirumala
BACKGROUND: Temporary arterial occlusion (TAO) is valuable for minimizing intraoperative rupture risk during intracranial aneurysm microsurgery; however, it may be associated with ischemic injury. This study aims to identify surgical and intraoperative neurophysiologic monitoring factors that predict perioperative stroke risk after TAO. METHODS: We performed a retrospective chart review of 177 intracranial aneurysm surgeries at our institution in which TAO was performed before placement of a permanent clip under monitoring with somatosensory evoked potentials (SSEPs) and electroencephalography...
August 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28524753/continuous-mapping-of-the-corticospinal-tracts-in-intramedullary-spinal-cord-tumor-surgery-using-an-electrified-ultrasonic-aspirator
#17
Ori Barzilai, Zvi Lidar, Shlomi Constantini, Khalil Salame, Yifat Bitan-Talmor, Akiva Korn
Intramedullary spinal cord tumors (IMSCTs) represent a rare entity, accounting for 4%-10% of all central nervous system tumors. Microsurgical resection of IMSCTs is currently considered the primary treatment modality. Intraoperative neurophysiological monitoring (IONM) has been shown to aid in maximizing tumor resection and minimizing neurological morbidity, consequently improving patient outcome. The gold standard for IONM to date is multimodality monitoring, consisting of both somatosensory evoked potentials, as well as muscle-based transcranial electric motor evoked potentials (tcMEPs)...
August 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28504930/extracorporeal-stimulation-of-sacral-nerve-roots-for-observation-of-pelvic-autonomic-nerve-integrity-description-of-a-novel-methodological-setup
#18
Tomasz Moszkowski, Daniel Kauff, Celine Wegner, Roman Ruff, Karin Somerlik-Fuchs, Thilo Krueger, Piotr Augustyniak, Klaus-Peter Hoffmann, Werner Kneist
INTRODUCTION: Neurophysiologic monitoring can improve autonomic nerve sparing during critical phases of rectal cancer surgery. OBJECTIVES: To develop a system for extracorporeal stimulation of sacral nerve roots. METHODS: Dedicated software controlled a ten-electrode stimulation array by switching between different electrode configurations and current levels. A built-in impedance and current level measurement assessed the effectiveness of current injection...
May 12, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28485777/influences-of-cisatracurium-besylate-and-vecuronium-bromide-on-muscle-relaxant-effects-and-electromyography-of-tracheal-intubation-under-general-anesthesia
#19
D-J Yu, H-Y Gao
OBJECTIVE: To observe the influences of atracurium besylate and vecuronium bromide on muscle relaxant effects and electromyography of patients with tracheal intubation under general anesthesia in thyroid surgery. PATIENTS AND METHODS: 120 patients treated with thyroid surgery were randomly divided into group A and group V. Patients in group A were administered with cisatracurium besylate combined with propofol and fentanyl for induction of tracheal intubation under general anesthesia...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28481390/multimodal-intraoperative-neurophysiologic-monitoring-in-the-neurosurgical-oncology
#20
Sema Brandmeier, Emine Taşkiran, Fatihhan Bölükbaşi, Ramazan Sari, İlhan Elmaci
AIM: Neurosurgical oncology that is performed for lesions located in critical areas like the sensorimotor area has additional risk because it may cause serious neurological deficiencies. Some intraoperative neuromonitoring (IONM) modalities can effectively help the surgeons to maximize resections of this kind of lesions with or without an acceptable neurological deficiency. Our aim was to share our IONM experiences with patients who underwent intracranial lesion surgery in critical areas between September 2013 and January 2015...
March 26, 2017: Turkish Neurosurgery
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