Open Access

Micol Colosimo, Ehab Shiban, Christina Lisa Wolfert, Ina Konietzko

• Intraoperative Neuromonitoring Parallel Session, September 25, 2023, 8:30 AM - 10:00 AM Background: This study seeks to evaluate the invaluable role and assistance of intraoperative neurophysiological monitoring (IONM) during surgical resection of supratentorial and infratentorial tumors in paediatric population. Methods: A retrospective analysis of a consecutive cohort of surgical treated paediatric intracranial lesions between January 2021 and January 2023 was performed. Motor evoked potentials (mMEPs) and somatosensory evoked potentials (SSEPs) recorded were performed in all cases. IONM changes were analysed and correlated with the neurological outcome before and after surgery with a minimum follow up of 6 weeks. Results: 24 children were identified (58% female and 42% male with a mean age of seven years). Lesions were located in the posterior fossa (67%) and the brain hemispheres (33%). In 67% of cases there were temporary (38%) and permanent (29%) MEP decline of moreIntraoperative Neuromonitoring Parallel Session, September 25, 2023, 8:30 AM - 10:00 AM Background: This study seeks to evaluate the invaluable role and assistance of intraoperative neurophysiological monitoring (IONM) during surgical resection of supratentorial and infratentorial tumors in paediatric population. Methods: A retrospective analysis of a consecutive cohort of surgical treated paediatric intracranial lesions between January 2021 and January 2023 was performed. Motor evoked potentials (mMEPs) and somatosensory evoked potentials (SSEPs) recorded were performed in all cases. IONM changes were analysed and correlated with the neurological outcome before and after surgery with a minimum follow up of 6 weeks. Results: 24 children were identified (58% female and 42% male with a mean age of seven years). Lesions were located in the posterior fossa (67%) and the brain hemispheres (33%). In 67% of cases there were temporary (38%) and permanent (29%) MEP decline of more than 50% or disappearance of MEPs respectively. In 38% of patients a temporary (13 %) or permanent (25%) paresis occurred after surgery. In 33% of the cases the MEPs were stable throughout the procedure and none of the children developed any new neurological deficits. In 63% of cases complete resection was achieved. We observed no case of intraoperative seizure Conclusions: Intraoperative MEP monitoring in children is safe and provides a continuous assessment of the functional integrity of motor pathways with higher chance of early detecting a progressive mechanical or vascular injury. There is a correlation between the decline of MEPs >50 % and occurrence of new postoperative neurological deficit. Stable MEPs were correlated to stable outcome without neurological deficit. IONM is useful in paediatric tumor resection: Improving the neurological outcome while increasing Gross Total Resection rate (GTR).…