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Toleikis JR, Pace C, Jahangiri FR, Hemmer LB, Toleikis SC. Intraoperative somatosensory evoked potential (SEP) monitoring: an updated position statement by the American Society of Neurophysiological Monitoring. J Clin Monit Comput 2024:10.1007/s10877-024-01201-x. [PMID: 39068294 DOI: 10.1007/s10877-024-01201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Accepted: 07/16/2024] [Indexed: 07/30/2024]
Abstract
Somatosensory evoked potentials (SEPs) are used to assess the functional status of somatosensory pathways during surgical procedures and can help protect patients' neurological integrity intraoperatively. This is a position statement on intraoperative SEP monitoring from the American Society of Neurophysiological Monitoring (ASNM) and updates prior ASNM position statements on SEPs from the years 2005 and 2010. This position statement is endorsed by ASNM and serves as an educational service to the neurophysiological community on the recommended use of SEPs as a neurophysiological monitoring tool. It presents the rationale for SEP utilization and its clinical applications. It also covers the relevant anatomy, technical methodology for setup and signal acquisition, signal interpretation, anesthesia and physiological considerations, and documentation and credentialing requirements to optimize SEP monitoring to aid in protecting the nervous system during surgery.
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Affiliation(s)
| | | | - Faisal R Jahangiri
- Global Innervation LLC, Dallas, TX, USA
- Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Laura B Hemmer
- Anesthesiology and Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Mandir A, Ebinger K, DeBruyn L, Kenney K. A Prospective Look at the Prevalence of Setup Electrode-Swap Errors Across Over 450 Intraoperative Neuromonitoring Cases. Neurodiagn J 2024:1-16. [PMID: 38941588 DOI: 10.1080/21646821.2024.2366563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 06/06/2024] [Indexed: 06/30/2024]
Abstract
Intraoperative neurophysiological monitoring (IONM) is shown to be useful in surgeries when the nervous system is at risk. Its success in part relies upon proper setup of often dozens of electrodes correctly placed and secured upon patients and inserted in specific stimulating and recording receptacles. Given the complicated setups and the demanding operating room environment, errors in setup are bound to occur. These have led to false negatives associated with new patient morbidities including, at times, paralysis. No studies quantify the prevalence of these types of setup errors. Approximately 800,000 operations annually utilize intraoperative neuromonitoring in the US alone, so even a small percentage of errors suggests clinical significance. In addition, these types of errors hinder the overall effectiveness of IONM and may result in lower reported sensitivities and lower cost-effectiveness of this important service. We sought to discover through a prospective study and verification through chart review the prevalence of "electrode-swap" errors (when recording and/or stimulating electrodes are incorrectly placed on the patient or in the IONM equipment during setup) across all procedures monitored. We found recording and/or stimulating electrode set up errors in 24 of 454 cases (5.3%). These data and examples of how errors were discovered intraoperatively are reported. We also offer techniques to help reduce this error rate. This study demonstrates a significant potential avoidable error in IONM diagnostic utility, patient outcome, and sensitivity/specificity of alert criteria. The value of identifying and correcting these errors is consequential, multifaceted, and far-reaching.
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Affiliation(s)
- Allen Mandir
- Real Time Neuromonitoring Associates, Nashville, Tennessee
| | - Kiara Ebinger
- Clinical Services, Allied Managed Processes, LLC, Nashville, Tennessee
| | - Lauren DeBruyn
- Clinical Services, Allied Managed Processes, LLC, Nashville, Tennessee
| | - Krystal Kenney
- Clinical Services, Allied Managed Processes, LLC, Nashville, Tennessee
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Reddy RP, Singh-Varma A, Chang R, Vedire A, Anetakis KM, Balzer JR, Crammond DJ, Shandal V, Lee JY, Shaw JD, Thirumala PD. Transcranial Motor Evoked Potentials as a Predictive Modality for Postoperative Deficit in Cervical Spine Decompression Surgery - A Systematic Review and Meta-Analysis. Global Spine J 2024; 14:1609-1628. [PMID: 38047537 DOI: 10.1177/21925682231219224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2023] Open
Abstract
STUDY DESIGN Systematic Review and Meta-analysis. OBJECTIVE The purpose of this study was to evaluate whether transcranial motor evoked potential (TcMEP) alarms can predict postoperative neurologic complications in patients undergoing cervical spine decompression surgery. METHODS A meta-analysis of the literature was performed using PubMed, Web of Science, and Embase to retrieve published reports on intraoperative TcMEP monitoring for patients undergoing cervical spine decompression surgery. The sensitivity, specificity, and diagnostic odds ratio (DOR), of overall, reversible, and irreversible TcMEP changes for predicting postoperative neurological deficit were calculated. A subgroup analysis was performed to compare anterior vs posterior approaches. RESULTS Nineteen studies consisting of 4608 patients were analyzed. The overall incidence of postoperative neurological deficits was 2.58% (119/4608). Overall TcMEP changes had a sensitivity of 56%, specificity of 94%, and DOR of 19.26 for predicting deficit. Reversible and irreversible changes had sensitivities of 16% and 49%, specificities of 95% and 98%, and DORs of 3.54 and 71.74, respectively. In anterior procedures, TcMEP changes had a DOR of 17.57, sensitivity of 49%, and specificity of 94%. In posterior procedures, TcMEP changes had a DOR of 21.01, sensitivity of 55%, and specificity of 94%. CONCLUSION TcMEP monitoring has high specificity but low sensitivity for predicting postoperative neurological deficit in cervical spine decompression surgery. Patients with new postoperative neurological deficits were 19 times more likely to have experienced intraoperative TcMEP changes than those without new deficits, with irreversible TcMEP changes indicating a much higher risk of deficit than reversible TcMEP changes.
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Affiliation(s)
- Rajiv P Reddy
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Anya Singh-Varma
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Robert Chang
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Abhinav Vedire
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Katherine M Anetakis
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jeffrey R Balzer
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Donald J Crammond
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Varun Shandal
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Joon Y Lee
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jeremy D Shaw
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Parthasarathy D Thirumala
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
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Soliman MA, Ramadan A, Shah AS, Corr SJ, Abdelazeem B, Rahimi M. Postoperative Spinal Cord Ischemia Monitoring: A Review of Techniques Available after Endovascular Aortic Repair. Ann Vasc Surg 2024; 106:438-466. [PMID: 38815914 DOI: 10.1016/j.avsg.2024.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 03/11/2024] [Accepted: 03/17/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Spinal cord ischemia is one of the complications that can occur after open and endovascular thoracoabdominal aortic repair. This occurs despite various perioperative approaches, including distal aortic perfusion, hybrid procedures with extra anatomical bypasses, motor-evoked potential, and cerebrospinal fluid drainage. The inability to recognize spinal ischemia in a timely manner remains a devastating complication after thoracoabdominal aortic repair.This review aims to look at novel technologies that are designed for continuous monitoring to detect early changes that signal the development of spinal cord ischemia and to discuss their benefits and limitations. METHODS We conducted a systematic review of the technologies available for continuous monitoring in the intensive care unit for early detection of spinal cord ischemia. Studies were eligible for inclusion if they used different technologies for monitoring spinal ischemia during the postoperative period. All articles that were not available in English were excluded. To ensure that all relevant articles were included, no other significant restrictions were imposed. RESULTS We identified 59 studies from the outset to December 2022 to be included in our study. New techniques have been studied as potentially useful monitoring tools that could provide simple and effective monitoring of the spinal cord. These include near-infrared spectroscopy, contrast-enhanced ultrasound, magnetic resonance imaging, fiber optic monitoring of the spinal cord, and cerebrospinal fluid biomarkers. CONCLUSIONS Despite the development of new techniques to monitor for postoperative spinal cord ischemia, their use remains limited. We recommend more future research to ensure rapid intervention for our patients.
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Affiliation(s)
| | - Alaa Ramadan
- Faculty of Medicine, South Valley University, Qena, Egypt
| | - Anuj S Shah
- Cardiovascular Surgery Department, Houston Methodist Hospital, TX
| | - Stuart J Corr
- Cardiovascular Surgery Department, Houston Methodist Hospital, TX
| | - Basel Abdelazeem
- Cardiology Department, West Virginia University, Morgantown, West Virginia
| | - Maham Rahimi
- Cardiovascular Surgery Department, Houston Methodist Hospital, TX
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Li K, Tao X, Liu J, Yang J, Shi J, Wu X, Jia W, Fan X, Qiao H. The application value and improved warning criterion of D-wave monitoring in intramedullary spinal cord tumor surgery. Spine J 2024:S1529-9430(24)00197-9. [PMID: 38679075 DOI: 10.1016/j.spinee.2024.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/29/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND CONTEXT The primary treatment method for intramedullary spinal cord tumor (IMSCT) is surgical resection, but this procedure carries a significant risk of neurological damage. Intraoperative neurophysiological monitoring (IONM) has become a necessary adjunctive tool for IMSCT resection. PURPOSE The current study aimed to explore the application value of D-wave monitoring in IMSCT surgery, and tried to investigate a tailored criterion for its early warning. STUDY DESIGN A retrospective clinical study. PATIENT SAMPLE A retrospective analysis was conducted based on the data of patients who underwent IMSCT surgeries performed by the same neurosurgical team at our hospital. IONM was applied in all surgeries. According to inclusion and exclusion criteria, ultimately 90 patients were enrolled in the study. OUTCOME MEASURES The McCormick Scale (MMS) was applied to assess the functional outcome through outpatient visits or telephone follow-up at one month and six months postoperatively. Patients with an MMS grade over II one month after surgery were considered to have newly developed postoperative motor dysfunction (PMD). If the MMS grade could be restored to I or II six months after surgery, it was defined as a short-term PMD. Otherwise, it was defined as a long-term PMD. METHODS The predictive value of different IONM modalities, including somatosensory evoked potential (SEP), muscle motor evoked potential (MEP), and D-wave for PMD, was assessed with sensitivity, specificity, positive predictive value, negative predictive value, and subsequent logistic regression analysis. At last, the cut-off value of the D-wave amplitude reduction ratio for predicting PMD was obtained through the receiver operating characteristic (ROC) curve analysis. RESULTS SEP showed the worst performance in predicting short-term and long-term PMD. Significant MEP changes were indicated as an independent predictive factor for short-term PMD (OR 5.062, 95% CI 1.947-13.166, p=.001), while D-wave changes were demonstrated as an independent predictor for long-term PMD (OR 339.433, 95% CI 11.337-10770.311, p=.001). The optimum cut-off value of the D-wave amplitude reduction ratio for predicting long-term PMD was 42.18%, with a sensitivity of 100% and a specificity of 93.8% (AUC=0.981, p<.001). CONCLUSIONS D-wave monitoring showed extremely high specificity in predicting PMD compared to SEP and MEP monitoring. Moreover, the authors suggested that a D-wave amplitude reduction of over 40% during IMSCT surgery generally indicates long-term PMD for patients.
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Affiliation(s)
- Ke Li
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Xiaorong Tao
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Jiajia Liu
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Jun Yang
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Jiawei Shi
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Xiao Wu
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Wenqing Jia
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
| | - Xing Fan
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China.
| | - Hui Qiao
- Department of Neuroelectrophysiology, Beijing Neurosurgical Institute, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, P.R. China
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Chiu AK, Bustos SP, Hasan O, Henry LE, Oster BA, Ratanpal AS, Padovano R, Brush PL, Pease TJ, Smith RA, Jauregui JJ, Bivona LJ, Cavanaugh DL, Koh EY, Vaccaro AR, Ludwig SC. Lower Extremity Somatosensory Evoked Potentials Predict Functional Outcomes in Complete Traumatic Cervical Spinal Cord Injury. World Neurosurg 2024; 182:e301-e307. [PMID: 38008173 DOI: 10.1016/j.wneu.2023.11.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 11/28/2023]
Abstract
BACKGROUND Traumatic cervical spinal cord injury (tCSCI) is often a debilitating injury, making early prognosis important for medical and surgical planning. Currently, the best early predictors of prognosis are physical examination, imaging studies, and patient demographics. Despite these factors, patient outcomes continue to vary significantly. The purpose of this study was to evaluate the prognostic value of somatosensory evoked potentials (SSEPs) with functional outcomes in tCSCI patients. METHODS A retrospective study was conducted on prospectively collected data from 2 academic institutions. Patients 18 years and older who had tCSCI and underwent posterior cervical decompression and stabilization with intraoperative neuromonitoring were reviewed. The outcomes of interest were the American Spinal Injury Association (ASIA) Impairment Scale (AIS) grade and ASIA motor score at follow-up. Outcomes measures were assessed via student t-tests, chi-squared tests, and multivariable regression analysis. RESULTS A total of 79 patients were included. In complete injuries, detectable lower extremity SSEPs were associated with higher ASIA motor scores at follow-up (P = 0.002), greater increases in ASIA motor scores at follow-up (P = 0.009), and a greater likelihood of clinically important improvement in ASIA motor score (P = 0.024). Incomplete, AIS grade C injuries has higher rates of grade conversion (P = 0.019) and clinically important improvement in ASIA motor score (P = 0.010), compared to AIS grade A or B injuries. CONCLUSIONS The detection of lower extremity SSEP signals during initial surgical treatment of tCSCI is associated with greater improvement in ASIA motor scores postoperatively. The association is most applicable to patients with complete injury.
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Affiliation(s)
- Anthony K Chiu
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Sabrina P Bustos
- Liberty University College of Osteopathic Medicine, Lynchburg, Virginia, USA
| | - Ovais Hasan
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Leah E Henry
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Brittany A Oster
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Amit S Ratanpal
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Richard Padovano
- Departments of Orthopaedic Surgery and Neurological Surgery, Thomas Jefferson University and The Rothman Institute, Philadelphia, Pennsylvania, USA
| | - Parker L Brush
- Departments of Orthopaedic Surgery and Neurological Surgery, Thomas Jefferson University and The Rothman Institute, Philadelphia, Pennsylvania, USA
| | - Tyler J Pease
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Ryan A Smith
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Julio J Jauregui
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Louis J Bivona
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Daniel L Cavanaugh
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Eugene Y Koh
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Alexander R Vaccaro
- Departments of Orthopaedic Surgery and Neurological Surgery, Thomas Jefferson University and The Rothman Institute, Philadelphia, Pennsylvania, USA
| | - Steven C Ludwig
- Division of Spine Surgery, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA.
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Akimoto H, Suzuki H, Kan S, Funaba M, Nishida N, Fujimoto K, Ikeda H, Yonezawa T, Ikushima K, Shimizu Y, Matsubara T, Harada K, Nakagawa S, Sakai T. Resting-state functional magnetic resonance imaging indices are related to electrophysiological dysfunction in degenerative cervical myelopathy. Sci Rep 2024; 14:2344. [PMID: 38282042 PMCID: PMC10822854 DOI: 10.1038/s41598-024-53051-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 01/27/2024] [Indexed: 01/30/2024] Open
Abstract
The age-related degenerative pathologies of the cervical spinal column that comprise degenerative cervical myelopathy (DCM) cause myelopathy due spinal cord compression. Functional neurological assessment of DCM can potentially reveal the severity and pathological mechanism of DCM. However, functional assessment by conventional MRI remains difficult. This study used resting-state functional MRI (rs-fMRI) to investigate the relationship between functional connectivity (FC) strength and neurophysiological indices and examined the feasibility of functional assessment by FC for DCM. Preoperatively, 34 patients with DCM underwent rs-fMRI scans. Preoperative central motor conduction time (CMCT) reflecting motor functional disability and intraoperative somatosensory evoked potentials (SEP) reflecting sensory functional disability were recorded as electrophysiological indices of severity of the cervical spinal cord impairment. We performed seed-to-voxel FC analysis and correlation analyses between FC strength and the two electrophysiological indices. We found that FC strength between the primary motor cortex and the precuneus correlated significantly positively with CMCT, and that between the lateral part of the sensorimotor cortex and the lateral occipital cortex also showed a significantly positive correlation with SEP amplitudes. These results suggest that we can evaluate neurological and electrophysiological severity in patients with DCM by analyzing FC strengths between certain brain regions.
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Affiliation(s)
- Hironobu Akimoto
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hidenori Suzuki
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Shigeyuki Kan
- Department of Psychiatry and Neurosciences, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Hiroshima, 734-8553, Japan
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Masahiro Funaba
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Norihiro Nishida
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Kazuhiro Fujimoto
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hiroaki Ikeda
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Teppei Yonezawa
- Department of Radiological Technology, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Kojiro Ikushima
- Department of Radiological Technology, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yoichiro Shimizu
- Department of Radiological Technology, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Toshio Matsubara
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, 755-8505, Japan
| | - Kenichiro Harada
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, 755-8505, Japan
| | - Shin Nakagawa
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, 755-8505, Japan
| | - Takashi Sakai
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
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Matabele MN, Kille TL, Gorelik M, Van Beek-King J, Legare JM, Stadler JA, Iskandar BJ, Wheeler BJ, Puricelli MD. Intraoperative neural monitoring during head and neck surgery in patients with concern for cervical spine instability. Int J Pediatr Otorhinolaryngol 2023; 175:111749. [PMID: 37839292 DOI: 10.1016/j.ijporl.2023.111749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/17/2023]
Abstract
Cervical and craniocervical instability are associated with catastrophic procedural outcomes. We discuss three individuals who required otolaryngologic surgical intervention: two with symptomatic spinal instability and one in whom spinal stability was unable to be assessed. Two cases were managed with procedural positioning precautions and evoked potential monitoring, and the other with procedural positioning precautions alone. Methods of monitoring and triggers for repositioning are discussed. This series is intended to discuss the approach and potential added value of evoked potential monitoring for risk mitigation in pediatric patients with concern for cervical spine instability.
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Affiliation(s)
- Maya N Matabele
- University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Tony L Kille
- Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael Gorelik
- Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin-Madison, Madison, WI, USA
| | - Jessica Van Beek-King
- Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin-Madison, Madison, WI, USA
| | - Janet M Legare
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
| | - James A Stadler
- Department of Neurological Surgery, University of Wisconsin-Madison, Madison, WI, USA
| | - Bermans J Iskandar
- Department of Neurological Surgery, University of Wisconsin-Madison, Madison, WI, USA
| | - Bryan J Wheeler
- Department of Neurology, University of Wisconsin Health, Madison, WI, USA
| | - Michael D Puricelli
- Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin-Madison, Madison, WI, USA.
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Guo X, Jiang C, Zhang Y, Chen Z, Hao D, Zhang H. Spermatogonial stem-cell-derived neural-like cell transplantation enhances the functional recovery of a rat spinal cord injury model: characterization of evoked potentials. Front Neurosci 2023; 17:1289581. [PMID: 37908621 PMCID: PMC10613671 DOI: 10.3389/fnins.2023.1289581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 09/25/2023] [Indexed: 11/02/2023] Open
Abstract
Severe spinal cord injuries (SCIs) usually result in the temporary or permanent impairment of strength, sensation or autonomic functions below the sites of injuries. To date, a large number of therapeutic approaches have been used to ameliorate SCIs, and subsequent stem cell transplantation appears to be a promising strategy. The aim of this study was to evaluate the therapeutic effect of stem cells by changes in the evoked potentials at different time points after a transplantation of spermatogonial stem cells (SSCs) to differentiate the source neurons in a rat model with SCIs, as well as through histopathology. A modified Plemel spinal cord lateral compression model was used. The experiment was divided into a blank, a control and a SSC transplantation group. Motor activity scores, sensory evoked potentials (SEPs) and motor evoked potentials (MEPs) were assessed through motor resuscitation as well as histologic evaluation on each experimental group to determine the improvement. Consistent with our results, motor scores and evoked potentials were significantly improved in the SSC transplantation group. In addition, a histologic assessment showed that the transplanted stem cells had a significant restorative effect on the reconstruction of tissue cells. 1 week after the stem cell transplantation, the SSC transplantation group showed improvement in spinal cord functions and spinal cord pathologic injuries. After 2 weeks and beyond, the SSC transplantation group showed significant improvement in spinal cord functions and spinal cord pathology compared to the control group, meanwhile the evoked potentials and motor function of the hind limbs of rats in the SSC transplantation group were significantly improved. Therefore, the therapeutic strategies for spermatogonial stem cells will be an effective program in the study on SCIs, and we suggest the somatosensory evoked potentials as a tool to assess the degree of recovery from SCIs after the transplantation of stem cells.
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Affiliation(s)
- Xinyu Guo
- Department of Orthopedics, The Second Hospital of Lanzhou University, Lanzhou, China
- Department of Spine Surgery, Xi'an Honghui Hospital, Xi’an, China
| | - Chao Jiang
- Department of Orthopedics, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yongjie Zhang
- Department of Electromyography, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Zhe Chen
- Department of Orthopedics, The Second Hospital of Lanzhou University, Lanzhou, China
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Dingjun Hao
- Department of Spine Surgery, Xi'an Honghui Hospital, Xi’an, China
| | - Haihong Zhang
- Department of Orthopedics, The Second Hospital of Lanzhou University, Lanzhou, China
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Reddy RP, Gorijala VK, Kaithi VR, Shandal V, Anetakis KM, Balzer JR, Crammond DJ, Shaw JD, Lee JY, Thirumala PD. Utility of transcranial motor-evoked potential changes in predicting postoperative deficit in lumbar decompression and fusion surgery: a systematic review and meta-analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:3321-3332. [PMID: 37626247 DOI: 10.1007/s00586-023-07879-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/14/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023]
Abstract
PURPOSE The primary aim of this study was to evaluate whether TcMEP alarms can predict the occurrence of postoperative neurological deficit in patients undergoing lumbar spine surgery. The secondary aim was to determine whether the various types of TcMEP alarms including transient and persistent changes portend varying degrees of injury risk. METHODS This was a systematic review and meta-analysis of the literature from PubMed, Web of Science, and Embase regarding outcomes of transcranial motor-evoked potential (TcMEP) monitoring during lumbar decompression and fusion surgery. The sensitivity, specificity, and diagnostic odds ratio (DOR) of TcMEP alarms for predicting postoperative deficit were calculated and presented with forest plots and a summary receiver operating characteristic curve. RESULTS Eight studies were included, consisting of 4923 patients. The incidence of postoperative neurological deficit was 0.73% (36/4923). The incidence of deficits in patients with significant TcMEP changes was 11.79% (27/229), while the incidence in those without changes was 0.19% (9/4694). All TcMEP alarms had a pooled sensitivity and specificity of 63 and 95% with a DOR of 34.92 (95% CI 7.95-153.42). Transient and persistent changes had sensitivities of 29% and 47%, specificities of 96% and 98%, and DORs of 8.04 and 66.06, respectively. CONCLUSION TcMEP monitoring has high specificity but low sensitivity for predicting postoperative neurological deficit in lumbar decompression and fusion surgery. Patients who awoke with new postoperative deficits were 35 times more likely to have experienced TcMEP changes intraoperatively, with persistent changes indicating higher risk of deficit than transient changes. LEVEL OF EVIDENCE II Diagnostic Systematic Review.
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Affiliation(s)
- Rajiv P Reddy
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
| | - Vamsi K Gorijala
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Varun R Kaithi
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Varun Shandal
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Katherine M Anetakis
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jeffrey R Balzer
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Donald J Crammond
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jeremy D Shaw
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Joon Y Lee
- Pittsburgh Orthopaedic Spine Research, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Parthasarathy D Thirumala
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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11
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Wilson JP, Vallejo JB, Kumbhare D, Guthikonda B, Hoang S. The Use of Intraoperative Neuromonitoring for Cervical Spine Surgery: Indications, Challenges, and Advances. J Clin Med 2023; 12:4652. [PMID: 37510767 PMCID: PMC10380862 DOI: 10.3390/jcm12144652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Intraoperative neuromonitoring (IONM) has become an indispensable surgical adjunct in cervical spine procedures to minimize surgical complications. Understanding the historical development of IONM, indications for use, associated pitfalls, and recent developments will allow the surgeon to better utilize this important technology. While IONM has shown great promise in procedures for cervical deformity, intradural tumors, or myelopathy, routine use in all cervical spine cases with moderate pathology remains controversial. Pitfalls that need to be addressed include human error, a lack of efficient communication, variable alarm warning criteria, and a non-standardized checklist protocol. As the techniques associated with IONM technology become more robust moving forward, IONM emerges as a crucial solution to updating patient safety protocols.
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Affiliation(s)
- John Preston Wilson
- Department of Neurosurgery, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA
| | - Javier Brunet Vallejo
- Department of Neurosurgery, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA
| | - Deepak Kumbhare
- Department of Neurosurgery, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA
| | - Bharat Guthikonda
- Department of Neurosurgery, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA
| | - Stanley Hoang
- Department of Neurosurgery, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA
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12
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Wang Z, Yang S, Liang S, Yang W, Shi A, Guo W, Yang W, Ge Z. The value of somatosensory evoked potentials in intraoperative evaluation of indirect decompression effect of oblique lumbar interbody fusion for lumbar spinal stenosis. INTERNATIONAL ORTHOPAEDICS 2023:10.1007/s00264-023-05790-1. [PMID: 37039818 DOI: 10.1007/s00264-023-05790-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 03/20/2023] [Indexed: 04/12/2023]
Abstract
PURPOSE The aim of this study was to explore the relationship between intraoperative somatosensory evoked potential (SEP) amplitude changes and clinical outcomes of OLIF indirect decompression for degenerative lumbar spinal stenosis (DLSS). METHODS A prospective study was performed on 201 patients who received oblique lumbar interbody fusion (OLIF) in our hospital from July 2017 to May 2021 due to single segmental DLSS. The patients were divided into three groups: group A (mild DLSS), group B (moderate DLSS), and group C (severe DLSS). The P40 amplitude during operation were recorded, and the clinical efficacy was evaluated by JOA score 1 year postoperative. ROC curves for satisfactory efficacy of P40 amplitude improvement rate and CSA improvement rate were established. Pearson correlation was used to analyze the relationship between P40 improvement rate and JOA improvement rate. RESULTS In group A and group B, the improvement rate of JOA in P40 significantly improved group was significantly greater that in improved group and unimproved group (Pa = 0.009; Pb < 0.000). No significant among-subgroup differences in group C (all P > 0.05). In both groups A and B, there was a significant difference in the improvement rate of P40 amplitude between the satisfactory group and the ineffective group (Pa = 0.013; Pb = 0.001), while in group C, there was no statistical significance (Pc = 0.107). By variable Person correlation analysis, a significant positive correlation was obtained between JOA improvement rate and P40 amplitude improvement rate in groups A and B (r1 = 0.27, P1 = 0.02; r2 = 0.508, P2 = 0.001), no correlation between the two in group C (r3 = 0.243, P3 = 0.056). The area under the ROC for assessing surgical efficacy in terms of CSA improvement rate was 0.813 (95% CI: 0.737-0.889, P < 0.001) and 0.767 (95% CI: 0.677-0.856, P < 0.001) in group A and group B, respectively, with satisfactory efficacy cutoff points of 50.18% and 67.89%. CONCLUSION For mild and moderate DLSS, the intraoperative P40 amplitude improvement rate can predict the improvement of clinical symptoms after surgery and can be used as a reference index to assess the effect of indirect decompression. For severe DLSS, the P40 amplitude improvement rate has limited significance in guiding indirect decompression, and OLIF indirect decompression is not the right treatment for this type of patients.
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Affiliation(s)
- Zhiqiang Wang
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Shulong Yang
- Department of Orthopaedics, Wuhai People's Hospital, Wuhai City, Inner Mongolia, China
| | - Simin Liang
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Wanzhong Yang
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Anli Shi
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Wei Guo
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Wei Yang
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China
| | - Zhaohui Ge
- Department of Orthopaedics, General Hospital of Ningxia Medical University, Shengli Street, Yinchuan City, Ningxia, China.
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Zelenty WD, Paek S, Dodo Y, Sarin M, Shue J, Soffin E, Lebl DR, Cammisa FP, Girardi FP, Sokunbi G, Sama AA, Hughes AP. Utilization Trends of Intraoperative Neuromonitoring for Anterior Cervical Discectomy and Fusion in New York State. Spine (Phila Pa 1976) 2023; 48:492-500. [PMID: 36576864 DOI: 10.1097/brs.0000000000004569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/04/2022] [Indexed: 12/29/2022]
Abstract
STUDY DESIGN Retrospective cohort analysis. OBJECTIVE To elucidate trends in the utilization of intraoperative neuromonitoring (IONM) during anterior cervical discectomy and fusion (ACDF) procedures in NY state using the Statewide Planning and Research Cooperative System and to determine if utilization of IONM resulted in a reduction in postoperative neurological deficits. SUMMARY OF BACKGROUND DATA IONM has been available to spinal surgeons for several decades. It has become increasingly prevalent in all facets of spinal surgery including elective ACDF procedures. The utility of IONM for preventing a neurological deficit in elective spine procedures has recently been called into question. MATERIALS AND METHODS The Statewide Planning and Research Cooperative System database were accessed to perform a retrospective cohort study comparing monitored versus unmonitored ACDF procedures between 2007 and 2018 as defined by the International Classification of Disease-9 and 10 Procedural Coding System (ICD-9 PCS, ICD-10 PCS) codes. Patient demographics, medical history, surgical intervention, pertinent in-hospital events, and urban versus rural medical centers (as defined by the United States Office of Management and Budget) were recorded. Propensity-score-matched comparisons were used to identify factors related to the utilization of IONM and risk factors for neurological deficits after elective ACDF. RESULTS A total of 70,838 [15,092 monitored (21.3%) and 55,746 (78.7%) unmonitored] patients' data were extracted. The utilization of IONM since 2007 has increased in a linear manner from 0.9% of cases in 2007 to 36.7% by 2018. Overall, baseline characteristics of patients who were monitored during cases differed significantly from unmonitored patients in age, race/ethnicity, insurance type, presence of myelopathy or radiculopathy, and Charlson Comorbidity Index; however, only race/ethnicity was statistically significant when analyzed using propensity-score-matched. When comparing urban and rural medical centers, there is a significant lag in the adoption of the technology with no monitored cases in rural centers until 2012 with significant fluctuations in utilization compared with steadily increasing utilization among urban centers. From 2017 to 2018, reporting of neurological deficits after surgery resembled literature-established norms. Pooled analysis of these years revealed that the incidence of neurological complications occurred more frequently in monitored cases than in unmonitored (3.0% vs. 1.4%, P < 0.001). CONCLUSIONS The utility of IONM for elective ACDF remains uncertain; however, it continues to gain popularity for routine cases. For medical centers that lack similar resources to centers in more densely populated regions of NY state, reliable access to this technology is not a certainty. In our analysis of intraoperative neurological complications, it seems that IONM is not protective against neurological injury.
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Affiliation(s)
- William D Zelenty
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Samuel Paek
- Geisinger Commonwealth School of Medicine, Scranton, PA
| | - Yusuke Dodo
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
- Department of Orthopedic Surgery, School of Medicine, Showa University Hospital, Tokyo, Japan
| | - Michele Sarin
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Jennifer Shue
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Ellen Soffin
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Darren R Lebl
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Frank P Cammisa
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Federico P Girardi
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Gbolabo Sokunbi
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Andrew A Sama
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
| | - Alexander P Hughes
- Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, New York, NY
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14
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Di Domenico M, Viola D, Izzo A, D'Ercole M, Signorelli F, Montano N, Visocchi M. Methods and Principles of the Intraoperative Neurophysiologic Monitoring in Neurosurgery. ACTA NEUROCHIRURGICA. SUPPLEMENT 2023; 135:45-49. [PMID: 38153448 DOI: 10.1007/978-3-031-36084-8_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Intraoperative neurophysiologic monitoring (IONM) is an innovation introduced in neurosurgery in the past decades. It aims to support and guide the neurosurgeon to obtain the best surgical result possible, preventing the occurrence of neurological deficits. The somatosensory evoked potentials (SSEP) assess the integrity of the sensory pathways monitoring the dorsal column-medial lemniscus pathway during spine and cerebral surgery. Motor evoked potentials (MEPs) provide information on the integrity of the motor pathway monitoring the efferent motor pathways from the motor cortex to the muscle through corticospinal (or corticobulbar) tracts. Free-running EMG is the standard technique to monitor peripheral nerves, roots, or cranial motor nerves during surgery. Intraoperative EMG signals are activated during cranial motor nerves damaging or after an irritative stimulus. The duration, morphology, and persistence of EMG reflects the severity of neural injury. Nerve mapping consists of recording muscle activations given by direct nerve stimulation. This technique makes use of a stimulation probe available to the neurosurgeon which allows administering current directly to the nervous tissue (nerves, roots, etc.). Intraoperative neurophysiological monitoring (IONM) represents the standard of care during many procedures, including spinal, intracranial, and vascular surgeries, where there is a risk of neurological damage. Close communication and collaboration between the surgical team, neurophysiologist, and anesthesiologist is mandatory to obtain high-quality neuromonitoring, thus preventing neurologic injuries and gaining the best surgical "safe" results.
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Affiliation(s)
- Michele Di Domenico
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Diana Viola
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Alessandro Izzo
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Manuela D'Ercole
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Francesco Signorelli
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Nicola Montano
- Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
- Department of Neuroscience, Neurosurgery Section, Università Cattolica del Sacro Cuore, Rome, Italy
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15
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Intraoperative Monitoring During Neurosurgical Procedures and Patient Outcomes. CURRENT ANESTHESIOLOGY REPORTS 2022. [DOI: 10.1007/s40140-022-00542-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Dauleac C, Boulogne S, Barrey CY, Guyotat J, Jouanneau E, Mertens P, Berhouma M, Jung J, André-Obadia N. Predictors of functional outcome after spinal cord surgery: Relevance of intraoperative neurophysiological monitoring combined with preoperative neurophysiological and MRI assessments. Neurophysiol Clin 2022; 52:242-251. [PMID: 35396150 DOI: 10.1016/j.neucli.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVES To assess the accuracy of intraoperative neurophysiological monitoring (IONM) in predicting immediate and 3-month postoperative neurological new deficit (or deterioration) in patients benefiting from spinal cord (SC) surgery; and to identify factors associated with a higher risk of postoperative clinical worsening. METHODS Consecutive patients who underwent SC surgery with IONM were included. Pre and postoperative clinical (modified McCormick scale), radiological (lesion-occupying area ratio), and electrophysiological features were collected. RESULTS A total of 99 patients were included: 14 (14.1%) underwent extradural surgery, 50 (50.5%) intradural extramedullary surgery, and 35 (35.4%) intramedullary surgery. Cumulatively, multimodal IONM (motor and somatosensory evoked potentials, D-wave whenever possible) significantly predicted postoperative deficits (p<0.001), with a sensitivity, specificity, positive predictive value, and negative predictive value of 0.81, 0.93, 0.83, and 0.92, respectively. Sixty (60.6%) patients displayed no IONM change, whereas 39 (39.4%) displayed IONM worsening. In multivariate analysis, predictors for postoperative clinical worsening were: abnormal preoperative electrophysiological assessment (p=0.03), intramedullary tumor (p<0.001), lesion-occupying area ratio ≥0.7 (p<0.001), and IONM alterations (p<0.001). Three months after the surgical procedure, in patients presenting at least one of the risk factors described above, 45/81 (55.6%) and 19/81 (23.5%) were clinically and electrophysiologically improved, respectively; while 13/81 (16.0%) and 10/81 (12.3%) were clinically and electrophysiologically worsened. CONCLUSION Multimodal IONM is an essential tool to guide SC surgery, and enables the accurate prediction of postoperative neurological outcome. Specific attention should be given to patients presenting with preoperative electrophysiological abnormalities, large tumor volume, and intramedullary tumor location.
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Affiliation(s)
- Corentin Dauleac
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurologie Fonctionnelle et Epileptologie, Lyon, France; Université Lyon I, Université Claude Bernard, Lyon, France; Laboratoire CREATIS, CNRS UMR5220, Inserm U1206, INSA-Lyon; Université de Lyon I, Lyon, France.
| | - Sébastien Boulogne
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurologie Fonctionnelle et Epileptologie, Lyon, France; Université Lyon I, Université Claude Bernard, Lyon, France; Centre de Recherche de Neurosciences de Lyon, INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, F-69000 Lyon, France
| | - Cédric Y Barrey
- Université Lyon I, Université Claude Bernard, Lyon, France; Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurochirurgie C, Lyon, France
| | - Jacques Guyotat
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurochirurgie D, Lyon, France
| | - Emmanuel Jouanneau
- Université Lyon I, Université Claude Bernard, Lyon, France; Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurochirurgie B, Lyon, France
| | - Patrick Mertens
- Université Lyon I, Université Claude Bernard, Lyon, France; Centre de Recherche de Neurosciences de Lyon, INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, F-69000 Lyon, France; Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurochirurgie A, Lyon, France
| | - Moncef Berhouma
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurologie Fonctionnelle et Epileptologie, Lyon, France; Laboratoire CREATIS, CNRS UMR5220, Inserm U1206, INSA-Lyon; Université de Lyon I, Lyon, France; Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurochirurgie D, Lyon, France
| | - Julien Jung
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurologie Fonctionnelle et Epileptologie, Lyon, France; Université Lyon I, Université Claude Bernard, Lyon, France; Centre de Recherche de Neurosciences de Lyon, INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, F-69000 Lyon, France
| | - Nathalie André-Obadia
- Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Service de Neurologie Fonctionnelle et Epileptologie, Lyon, France; Université Lyon I, Université Claude Bernard, Lyon, France; Centre de Recherche de Neurosciences de Lyon, INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, F-69000 Lyon, France
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