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Background And Objective: Neurological insults during surgery arise from anatomic and/or physiologic perturbations. Intraoperative neurophysiologic monitoring (IONM) fills a critical role of ensuring that any neurological insults during certain surgical procedures are caught in real-time to prevent patient harm. IONM provides immediate feedback to the surgeon and anesthesiologist about the need for an intervention to prevent a neurologic deficit postoperatively. As important as it seems to have IONM available to any patient having surgery where a neurological injury is possible, the truth is that IONM is unavailable to large swaths of people around the world. This review is intended to bring attention to all of the ways IONM is critically important for a variety of surgeries and highlight the barriers preventing most patients around the world from benefiting from the technology. Expansion of IONM to benefit patients from all over the world is the new frontier.
Methods: We searched all English language original papers and reviews using Embase and MEDLINE/PubMed databases published from 1995 to 2022. Different combinations of the following search terms were used: intraoperative neuromonitoring, neurosurgery, low-income countries, cost, safety, and efficacy.
Key Content And Findings: We describe common IONM modalities used during surgery as well as explore barriers to implementation of IONM in resource-limited regions. Additionally, we describe ongoing efforts to establish IONM capabilities in new locations around the world.
Conclusions: In this paper, we performed a review of the literature on IONM with an emphasis on the basic understanding of clinical applications and the barriers for expansion into resource-limited settings. Finally, we provide our interpretation of "new frontiers" in IONM quite literally facilitating access to the tools and education so a hospital in Sub-Saharan Africa can incorporate IONM for their high-risk surgeries.
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http://dx.doi.org/10.21037/atm-22-4586 | DOI Listing |
Clin Spine Surg
September 2025
Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Jonathan Lucas Street, Charleston, SC.
Study Design: Retrospective review.
Objective: Examine the utility of intraoperative neuromonitoring (IONM) in anterior cervical spine procedures for myelopathy in informing intraoperative interventions.
Summary Of Background Data: The routine use of IONM in anterior cervical spine procedures for myelopathy remains controversial, with poorly defined indications and limited evidence validating protocols for managing intraoperative alerts.
Brain Res Bull
September 2025
Academy of Medical Engineering and Translation Medicine, Tianjin University, Tianjin 300072, China.
Brain tumors are one of the most dangerous cancers with serious effects on human health. The primary treatment approach involves a combination of surgery, supplemented by postoperative radiotherapy. The growth pattern of malignant tumor is typically infiltrative, posing a challenge in visually distinguishing the tumor from the surrounding normal brain tissue during surgery.
View Article and Find Full Text PDFClin Neurophysiol
August 2025
Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.
Objective: We investigated the relationship between intraoperative changes of direct cortical stimulation (DCS) motor evoked potentials (MEP), lowest motor threshold (MT) reached during subcortical dynamic mapping, and the patient's motor outcome.
Methods: We included data from 473 intra-axial brain tumor surgeries, 432 of which had motor outcome reported directly after surgery, at discharge and the 3-month follow-up visit. The MEP changes and MT groups were correlated with clinical parameters.
JAMA Surg
September 2025
Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
Importance: The transoral endoscopic thyroidectomy vestibular approach (TOETVA) is a scarless surgical technique gaining popularity; however, its safety, cost, and impact on pathological evaluation compared with minimally invasive nonendoscopic thyroidectomy (MINET) remain under evaluation.
Objective: To compare surgical outcomes, pathological considerations, and cost profiles following TOETVA vs MINET using a propensity-matched cohort.
Design, Setting, And Participants: This cohort study included 720 patients undergoing oncoplastic thyroidectomy between January 2021 and January 2023, with 12-month follow-up, at a tertiary referral center in Taipei, Taiwan.
J Craniofac Surg
September 2025
Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China.
Objective: This study summarized the application effect and clinical experience of multimodal intraoperative neurophysiological monitoring (IONM) technology in the surgery of neurofibromatosis type 1 (NF1)-related craniofacial tumors.
Materials And Methods: A retrospective study was conducted on NF1 patients who were admitted between January 2019 and December 2024 and treated with craniofacial tumor resection surgery assisted by multimodal IONM technology. Data from this study were analyzed regarding sex, age at surgery, surgical procedures, IONM parameters, preoperative and postoperative symptoms, follow-up period, as well as oncological outcome.