神经根减压术中体感诱发电位监测结果与临床预后的相关性

Correlation of intraoperative DSEP monitoring with the clinical outcome in patients underwent nerve root decompression

目的 :观察腰骶神经根病变患者肌皮神经节段刺激体感诱发电位 (DSEP)术中监测结果与术后临床症状改善之间的相关性。方法 :对 2 2例经CT或MRI检查证实的腰骶神经根压迫症患者进行神经根减压手术并进行术中诱发电位监测 ,在术前及术后 9周 (8～ 10周 )进行临床随访检查。结果 :减压手术中DSEP的波幅增高 ,则术后临床症状明显改善 (P <0 0 0 1) ;术后DSEP波幅较术前增高 (P <0 0 0 1) ,潜伏期缩短 (P <0 0 0 5 )。结论 :脊神经根减压中DSEP变化与术后临床症状改善呈正相关 ;术中DSEP波幅升高可预示术后临床症状改善。

Objectives:To observe the correlation of intraoperative dermatomal somatosensory evoked potential (DSEP) monitoring with the postoperative improvement of clinical symptom’s in patients with lumbosacral radiculopathy.Methods:Nerve root decompression was performed on 22 patients with lumbosacral radiculopathy conformed by CT or MRI,and SEP monitoring was performed during the operation.A follow-up clinical examination was done before and 9 weeks after the operation.Results:The amplitude of intraoperative DSEP increased,the postoperative clinical symptoms improved significantly.The amplitude of postoperative DSEP increased and the latency decreased as compared with preoperative DSEP. Conclusions:The changes of intraoperative DSEP during spinal nerve root decompression might show positive correlation with the postoperative improvement of the clinical symptoms.The increase of intraoperative DSEP might predict the postoperative improvement of the clinical symptoms.