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Article: Variability of somatosensory-evoked potentials in different stages of scoliosis surgery

TitleVariability of somatosensory-evoked potentials in different stages of scoliosis surgery
Authors
Issue Date1999
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
Citation
Spine, 1999, v. 24 n. 17, p. 1799-1804 How to Cite?
AbstractStudy Design. A comparison of the latencies and amplitudes of the somatosensory-evoked potential in different stages of scoliosis surgery. Objectives. To investigate the normal variability of the somatosensory-evoked potential at different stages of scoliosis surgery and to improve the reliability of spinal cord monitoring. Summary of Background Data. False alarms in intraoperative spinal cord monitoring have been reported when the somatosensory-evoked potential measured before skin incision was used as the reference baseline value. However, the normal variability during different stages of surgery and the specificity of somatosensory-evoked potential is not well documented. Methods. The somatosensory-evoked potential of 90 patients who underwent surgical correction for idiopathic scoliosis was monitored intraoperatively, with stimuli applied to the posterior tibial nerve. The amplitudes and latencies of the somatosensory-evoked potential were recorded over Cz'-Fz and Cv-Fz. The values of latencies and amplitudes and their percentage variabilities were analyzed. Results. The values of latencies and their percentage variabilities did not differ significantly from each other in different stages of surgery. The values of amplitudes between different stages showed statistically significant differences. In particular, the amplitude of the somatosensory-evoked potential was found to be significantly decreased after exposure of the spine when compared with the amplitude before skin incision. Conclusion. Some variability in latencies and amplitudes between different stages of scoliosis surgery is normal. These results suggest that the somatosensory-evoked potential when the spine is exposed may be used as the reference baseline to determine whether somatosensory-evoked potentials are subnormal at the subsequent stages of surgery.
Persistent Identifierhttp://hdl.handle.net/10722/170021
ISSN
2015 Impact Factor: 2.439
2015 SCImago Journal Rankings: 1.459
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLuk, KDKen_US
dc.contributor.authorHu, Yen_US
dc.contributor.authorWong, YWen_US
dc.contributor.authorLeong, JCYen_US
dc.date.accessioned2012-10-30T06:04:48Z-
dc.date.available2012-10-30T06:04:48Z-
dc.date.issued1999en_US
dc.identifier.citationSpine, 1999, v. 24 n. 17, p. 1799-1804en_US
dc.identifier.issn0362-2436en_US
dc.identifier.urihttp://hdl.handle.net/10722/170021-
dc.description.abstractStudy Design. A comparison of the latencies and amplitudes of the somatosensory-evoked potential in different stages of scoliosis surgery. Objectives. To investigate the normal variability of the somatosensory-evoked potential at different stages of scoliosis surgery and to improve the reliability of spinal cord monitoring. Summary of Background Data. False alarms in intraoperative spinal cord monitoring have been reported when the somatosensory-evoked potential measured before skin incision was used as the reference baseline value. However, the normal variability during different stages of surgery and the specificity of somatosensory-evoked potential is not well documented. Methods. The somatosensory-evoked potential of 90 patients who underwent surgical correction for idiopathic scoliosis was monitored intraoperatively, with stimuli applied to the posterior tibial nerve. The amplitudes and latencies of the somatosensory-evoked potential were recorded over Cz'-Fz and Cv-Fz. The values of latencies and amplitudes and their percentage variabilities were analyzed. Results. The values of latencies and their percentage variabilities did not differ significantly from each other in different stages of surgery. The values of amplitudes between different stages showed statistically significant differences. In particular, the amplitude of the somatosensory-evoked potential was found to be significantly decreased after exposure of the spine when compared with the amplitude before skin incision. Conclusion. Some variability in latencies and amplitudes between different stages of scoliosis surgery is normal. These results suggest that the somatosensory-evoked potential when the spine is exposed may be used as the reference baseline to determine whether somatosensory-evoked potentials are subnormal at the subsequent stages of surgery.en_US
dc.languageengen_US
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.comen_US
dc.relation.ispartofSpineen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshChilden_US
dc.subject.meshEvoked Potentials, Somatosensory - Physiologyen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMonitoring, Intraoperative - Methodsen_US
dc.subject.meshProspective Studiesen_US
dc.subject.meshReaction Time - Physiologyen_US
dc.subject.meshScoliosis - Physiopathology - Surgeryen_US
dc.subject.meshSpinal Cord - Physiology - Physiopathology - Surgeryen_US
dc.subject.meshSpinal Fusion - Instrumentationen_US
dc.titleVariability of somatosensory-evoked potentials in different stages of scoliosis surgeryen_US
dc.typeArticleen_US
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_US
dc.identifier.emailHu, Y:yhud@hku.hken_US
dc.identifier.authorityLuk, KDK=rp00333en_US
dc.identifier.authorityHu, Y=rp00432en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1097/00007632-199909010-00009en_US
dc.identifier.pmid10488510-
dc.identifier.scopuseid_2-s2.0-0033200396en_US
dc.identifier.hkuros51978-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033200396&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume24en_US
dc.identifier.issue17en_US
dc.identifier.spage1799en_US
dc.identifier.epage1804en_US
dc.identifier.isiWOS:000082397700008-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLuk, KDK=7201921573en_US
dc.identifier.scopusauthoridHu, Y=7407116091en_US
dc.identifier.scopusauthoridWong, YW=36247941700en_US
dc.identifier.scopusauthoridLeong, JCY=35560782200en_US

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