PURPOSE: To evaluate the effectiveness of multimodal intraoperative neuromonitoring in the early detection of impending spinal cord injury during surgery for spinal deformity. METHOD: A retrospective review of prospectively collected data in 354 consecutive spinal deformity operations from June 2003 to October 2013. Patients were sub-grouped according to demographics, diagnosis and operative features. Post-operative neurological deficit was defined as either spinal cord, nerve root or transient deficit. RESULTS: Combined monitoring with SSEPs and MEPs was possible in 315 cases. The overall incidence of significant alerts was 7.1 % and overall permanent neurological deficit was 1.6 %. When results were collated, the overall combined sensitivity of multimodal monitoring was 100 % with a specificity of 99.3 %. CONCLUSIONS: Multimodal monitoring allows early detection of impending neurological deficit that is superior to a single monitoring modality. To achieve optimal use of monitoring, continuous communication between surgical, anaesthetic and neurophysiology teams are required. As a result of our experience we have incorporated in our consent procedure the discussion of monitoring and the possibility of needing to abandon the procedure, and completing in a staged fashion at a later date. We believe multimodal monitoring is the current gold standard for complex spinal deformity surgery.
PURPOSE: To evaluate the effectiveness of multimodal intraoperative neuromonitoring in the early detection of impending spinal cord injury during surgery for spinal deformity. METHOD: A retrospective review of prospectively collected data in 354 consecutive spinal deformity operations from June 2003 to October 2013. Patients were sub-grouped according to demographics, diagnosis and operative features. Post-operative neurological deficit was defined as either spinal cord, nerve root or transient deficit. RESULTS: Combined monitoring with SSEPs and MEPs was possible in 315 cases. The overall incidence of significant alerts was 7.1 % and overall permanent neurological deficit was 1.6 %. When results were collated, the overall combined sensitivity of multimodal monitoring was 100 % with a specificity of 99.3 %. CONCLUSIONS: Multimodal monitoring allows early detection of impending neurological deficit that is superior to a single monitoring modality. To achieve optimal use of monitoring, continuous communication between surgical, anaesthetic and neurophysiology teams are required. As a result of our experience we have incorporated in our consent procedure the discussion of monitoring and the possibility of needing to abandon the procedure, and completing in a staged fashion at a later date. We believe multimodal monitoring is the current gold standard for complex spinal deformity surgery.
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