Transcranial Corticospinal Motor-Evoked Potentials in Cases of Ventral and Ventrolateral Intradural Extramedullary Cervical Spinal Cord Tumors

被引:2
作者
Vasileva, Petra [1 ,2 ]
Hristov, Hristo [1 ,2 ]
Bussarsky, Assen [1 ,2 ]
Tanova, Rositsa [2 ,3 ]
Karakostov, Vasil [1 ,2 ]
Ferdinandov, Dilyan [1 ,2 ]
机构
[1] St Ivan Rilski Univ Hosp, Clin Neurosurg, Sofia 1431, Bulgaria
[2] Med Univ Sofia, Fac Med, Sofia 1431, Bulgaria
[3] St Ivan Rilski Univ Hosp, Clin Anesthesiol & Intens Care, Sofia 1431, Bulgaria
来源
MEDICINA-LITHUANIA | 2024年 / 60卷 / 09期
关键词
ventral or ventrolateral location; intradural extramedullary tumor; cervical spine; transcranial motor-evoked potentials; intraoperative neurophysiological monitoring; DORSAL COLUMN; SURGERY; EXPERIENCE;
D O I
10.3390/medicina60091488
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background and Objectives: We studied the clinical significance of an amplitude decrement and disappearance alarm criteria in transcranial motor-evoked potential (MEP) monitoring during surgeries on extramedullary tumors at the cervical spine with reference to postoperative morbidity. Material and Methods: We diagnosed and surgically treated fourteen patients with intradural extramedullary ventral or ventrolateral lesions to the cervical spinal cord in the Clinic of Neurosurgery at the University Hospital St Ivan Rilski from January 2018 to July 2022. Eight cases were diagnosed with schwannoma, and the remaining six had meningiomas. The follow-up period for neurological assessment was six months. Results: A decrease in the intraoperative transcranial MEPs of 50% or more compared to baseline in two cases (14.3%) resulted in an immediate postoperative motor deficit. One patient demonstrated full neurological recovery within six months, while the other exhibited only partial improvement. In six cases (42.9%) with preoperative motor deficits, tumor resection and decompression of the cervical spinal cord led directly to an increment of the transcranial MEPs by more than 20%. Postoperatively and at the 6-month follow-up, these patients showed recovery from the preoperative deficits. In the remaining cases, MEPs were stable during surgery with no clinical deterioration of the motor function. Conclusions: The decremented MEP criteria corresponded to postoperative motor deficit, whereas the improvement of the same parameters after decompression implied future recovery of preoperative motor deficits. The combination of different MEP criteria is likely to be helpful when tailored to a specific case of ventral or ventrolateral extramedullary lesions in the cervical spine.
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页数:10
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