Changes in retinal nerve fiber layer thickness after spinal surgery in the prone position: a prospective study

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dc.authoridHanci, Volkan/0000-0002-2227-194X
dc.contributor.authorGencer, Baran
dc.contributor.authorCosar, Murat
dc.contributor.authorTufan, Hasan Ali
dc.contributor.authorKara, Selcuk
dc.contributor.authorArikan, Sedat
dc.contributor.authorAkman, Tarik
dc.contributor.authorKiraz, Hasan Ali
dc.date.accessioned2025-01-27T20:41:04Z
dc.date.available2025-01-27T20:41:04Z
dc.date.issued2015
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractBackground and objectives: Changes in ocular perfusion play an important role in the pathogenesis of ischemic optic neuropathy. Ocular perfusion pressure is equal to mean arterial pressure minus intraocular pressure. The aim of this study was to evaluate the changes in the intraocular pressure and the retinal nerve fiber layer thickness in patients undergoing spinal surgery in the prone position. Methods: This prospective study included 30 patients undergoing spinal surgery. Retinal nerve fiber layer thickness were measured one day before and after the surgery by using optical coherence tomography. Intraocular pressure was measured by tonopen six times at different position and time-duration: supine position (baseline); 10 min after intubation (Supine 1); 10 (Prone 1), 60 (Prone 2), 120 (Prone 3) min after prone position; and just after postoperative supine position (Supine 2). Results: Our study involved 10 male and 20 female patients with the median age of 57 years. When postoperative retinal nerve fiber layer thickness measurements were compared with preoperative values, a statistically significant thinning was observed in inferior and nasal quadrants (p=0.009 and p=0.003, respectively). We observed a statistically significant intraocular pressure decrease in Supine 1 and an increase in both Prone 2 and Prone 3 when compared to the baseline. Mean arterial pressure and ocular perfusion pressure were found to be significantly lower in Prone 1, Prone 2 and Prone 3, when compared with the baseline. Conclusions: Our study has shown increase in intraocular pressure during spinal surgery in prone position. A statistically significant retinal nerve fiber layer thickness thinning was seen in inferior and nasal quadrants one day after the spinal surgery. (C) 2014 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.
dc.identifier.doi10.1016/j.bjane.2014.03.005
dc.identifier.endpage46
dc.identifier.issn0034-7094
dc.identifier.issn1806-907X
dc.identifier.issue1
dc.identifier.pmid25497748
dc.identifier.scopus2-s2.0-84926419109
dc.identifier.scopusqualityN/A
dc.identifier.startpage41
dc.identifier.urihttps://doi.org/10.1016/j.bjane.2014.03.005
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23998
dc.identifier.volume65
dc.identifier.wosWOS:000348246300007
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier Science Inc
dc.relation.ispartofRevista Brasileira De Anestesiologia
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectRetinal nerve fiber layer thickness
dc.subjectProne position
dc.subjectSpinal surgery
dc.subjectIntraocular pressure
dc.titleChanges in retinal nerve fiber layer thickness after spinal surgery in the prone position: a prospective study
dc.title.alternativeAlterações da espessura da camada de fibras nervosas da retina após cirurgia da coluna vertebral em pronação: Estudo prospectivo
dc.typeArticle

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