Raja Narendra Divakar Addanki , Sajo Thomas , Saravanan Balasundaram , Benjamin B. Lee , Katherine M. Anetakis , Jeffrey R. Balzer , Parthasarathy D. Thirumala
{"title":"脊髓髓内肿瘤切除过程中运动诱发电位的报警标准和可逆性的系统回顾","authors":"Raja Narendra Divakar Addanki , Sajo Thomas , Saravanan Balasundaram , Benjamin B. Lee , Katherine M. Anetakis , Jeffrey R. Balzer , Parthasarathy D. Thirumala","doi":"10.1016/j.clinph.2025.2110966","DOIUrl":null,"url":null,"abstract":"<div><h3>Background/Objective</h3><div>Myogenic motor-evoked potentials (myogenic MEPs) and Direct waves (D-waves) are essential for monitoring motor pathways during intramedullary spinal cord tumor (IMSCT) resections. However, the diagnostic accuracy of alarm criteria and the prognostic value of reversible versus irreversible changes remain unclear. This is the first study addressing this gap.</div></div><div><h3>Methods</h3><div>Following PRISMA-DTA guidelines, this review searched PubMed, MEDLINE, and OVID (1985–2024) for studies on intraoperative myogenic MEPs and/or D-waves with postoperative motor outcomes in IMSCT resections.</div></div><div><h3>Results</h3><div>Across 25 studies (1,060 patients), log DOR for complete myogenic MEP loss predicting postoperative motor deficits was 4.18 (95% CI: 2.63–5.73), and for incomplete loss was 2.46 (95% CI: 1.74–3.18). Irreversible reductions had a log DOR of 2.513 (95% CI: 1.197–3.829), reversible 0.528 (95% CI: −0.273–1.330). D-wave monitoring used 50% threshold consistently, reversible reductions tied to 75% deficit rate.</div></div><div><h3>Conclusion/significance</h3><div>Irreversible changes in myogenic MEPs and D-waves and reversible D-wave changes increased postoperative motor deficit risk, unlike reversible myogenic MEP changes. Additionally, both incomplete and complete myogenic MEP loss predict neurological deficits; however, complete loss is a stronger predictor than incomplete loss. These findings help neurophysiologists guide the surgical team in minimizing motor pathway injury while maximizing IMSCT resections.</div></div>","PeriodicalId":10671,"journal":{"name":"Clinical Neurophysiology","volume":"178 ","pages":"Article 2110966"},"PeriodicalIF":3.6000,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Systematic review of alarm criteria and reversibility in motor-evoked potentials during intramedullary spinal cord tumor resection\",\"authors\":\"Raja Narendra Divakar Addanki , Sajo Thomas , Saravanan Balasundaram , Benjamin B. Lee , Katherine M. Anetakis , Jeffrey R. Balzer , Parthasarathy D. Thirumala\",\"doi\":\"10.1016/j.clinph.2025.2110966\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background/Objective</h3><div>Myogenic motor-evoked potentials (myogenic MEPs) and Direct waves (D-waves) are essential for monitoring motor pathways during intramedullary spinal cord tumor (IMSCT) resections. However, the diagnostic accuracy of alarm criteria and the prognostic value of reversible versus irreversible changes remain unclear. This is the first study addressing this gap.</div></div><div><h3>Methods</h3><div>Following PRISMA-DTA guidelines, this review searched PubMed, MEDLINE, and OVID (1985–2024) for studies on intraoperative myogenic MEPs and/or D-waves with postoperative motor outcomes in IMSCT resections.</div></div><div><h3>Results</h3><div>Across 25 studies (1,060 patients), log DOR for complete myogenic MEP loss predicting postoperative motor deficits was 4.18 (95% CI: 2.63–5.73), and for incomplete loss was 2.46 (95% CI: 1.74–3.18). Irreversible reductions had a log DOR of 2.513 (95% CI: 1.197–3.829), reversible 0.528 (95% CI: −0.273–1.330). D-wave monitoring used 50% threshold consistently, reversible reductions tied to 75% deficit rate.</div></div><div><h3>Conclusion/significance</h3><div>Irreversible changes in myogenic MEPs and D-waves and reversible D-wave changes increased postoperative motor deficit risk, unlike reversible myogenic MEP changes. Additionally, both incomplete and complete myogenic MEP loss predict neurological deficits; however, complete loss is a stronger predictor than incomplete loss. 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Systematic review of alarm criteria and reversibility in motor-evoked potentials during intramedullary spinal cord tumor resection
Background/Objective
Myogenic motor-evoked potentials (myogenic MEPs) and Direct waves (D-waves) are essential for monitoring motor pathways during intramedullary spinal cord tumor (IMSCT) resections. However, the diagnostic accuracy of alarm criteria and the prognostic value of reversible versus irreversible changes remain unclear. This is the first study addressing this gap.
Methods
Following PRISMA-DTA guidelines, this review searched PubMed, MEDLINE, and OVID (1985–2024) for studies on intraoperative myogenic MEPs and/or D-waves with postoperative motor outcomes in IMSCT resections.
Results
Across 25 studies (1,060 patients), log DOR for complete myogenic MEP loss predicting postoperative motor deficits was 4.18 (95% CI: 2.63–5.73), and for incomplete loss was 2.46 (95% CI: 1.74–3.18). Irreversible reductions had a log DOR of 2.513 (95% CI: 1.197–3.829), reversible 0.528 (95% CI: −0.273–1.330). D-wave monitoring used 50% threshold consistently, reversible reductions tied to 75% deficit rate.
Conclusion/significance
Irreversible changes in myogenic MEPs and D-waves and reversible D-wave changes increased postoperative motor deficit risk, unlike reversible myogenic MEP changes. Additionally, both incomplete and complete myogenic MEP loss predict neurological deficits; however, complete loss is a stronger predictor than incomplete loss. These findings help neurophysiologists guide the surgical team in minimizing motor pathway injury while maximizing IMSCT resections.
期刊介绍:
As of January 1999, The journal Electroencephalography and Clinical Neurophysiology, and its two sections Electromyography and Motor Control and Evoked Potentials have amalgamated to become this journal - Clinical Neurophysiology.
Clinical Neurophysiology is the official journal of the International Federation of Clinical Neurophysiology, the Brazilian Society of Clinical Neurophysiology, the Czech Society of Clinical Neurophysiology, the Italian Clinical Neurophysiology Society and the International Society of Intraoperative Neurophysiology.The journal is dedicated to fostering research and disseminating information on all aspects of both normal and abnormal functioning of the nervous system. The key aim of the publication is to disseminate scholarly reports on the pathophysiology underlying diseases of the central and peripheral nervous system of human patients. Clinical trials that use neurophysiological measures to document change are encouraged, as are manuscripts reporting data on integrated neuroimaging of central nervous function including, but not limited to, functional MRI, MEG, EEG, PET and other neuroimaging modalities.