SSEP analysis in surgery of XXXX : the influence of @entity85 and surgical approach.

@entity1 @entity16 @entity1635 @entity2112 @entity51 @entity85
The study was conducted to assess the possible impact of @entity85 in @entity1 with @entity2112 ( @entity2112 ) on tibial nerve somatosensory evoked potentials (t-SSEPs) and the influence of spine correction upon postoperative SSEP recordings. In 61 consecutive @entity1 undergoing 64 spinal instrumentations, 129 pre- and postoperative SSEPs were analyzed. The degree of @entity85 was assessed by the pre-operative Cobb angle of the major scoliotic curve. In a control group, reference values of t-SSEP latencies were established with respect to body height. In a cohort study, @entity2112 @entity1 were compared with healthy controls with respect to t-SSEP latency, amplitude, configuration and interside difference. The results of the analysis showed that preoperative-body-height-corrected t-SSEP latencies were prolonged in 61% of @entity1 , with a pathological interside difference in 23.4% of them. The impairment of t-SSEPs was not related to the extent of @entity85 as assessed by the Cobb angle. Even without occurrence of postoperative @entity51 , postoperative t-SSEPs showed significantly increased latencies without changes in t-SSEP configuration. The prolongation of t-SSEP latencies was related to the surgical procedure (combined ventro-dorsal approach), but not to the extent of spine correction, level of instrumentation, or number of fused segments. The analysis of preoperative t-SSEPs was of no predictive @entity16 . t-SSEPs are significantly affected in @entity2112 @entity1 , although these @entity1 show no obvious clinical @entity51 . The extent of t-SSEP impairment is not related to the severity of @entity1635 . Even in clinically uneventful surgery, the postoperative t-SSEPs can be deteriorated depending on the surgical approach. This indicates a subclinical impact of spine surgery upon spinal cord function.
