Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography

Abstract Only few studies have assessed brain shift caused by positional change. This study aimed to identify factors correlated with a large postneurosurgical positional brain shift (PBS). Sixty-seven patients who underwent neurosurgical procedures had upright computed tomography (CT) scan using se...

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Main Authors: Keisuke Yoshida, Masahiro Toda, Yoshitake Yamada, Minoru Yamada, Yoichi Yokoyama, Kei Tsutsumi, Hirokazu Fujiwara, Kenzo Kosugi, Masahiro Jinzaki
Format: Article
Language:English
Published: Nature Portfolio 2022-06-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-022-13276-0
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author Keisuke Yoshida
Masahiro Toda
Yoshitake Yamada
Minoru Yamada
Yoichi Yokoyama
Kei Tsutsumi
Hirokazu Fujiwara
Kenzo Kosugi
Masahiro Jinzaki
author_facet Keisuke Yoshida
Masahiro Toda
Yoshitake Yamada
Minoru Yamada
Yoichi Yokoyama
Kei Tsutsumi
Hirokazu Fujiwara
Kenzo Kosugi
Masahiro Jinzaki
author_sort Keisuke Yoshida
collection DOAJ
description Abstract Only few studies have assessed brain shift caused by positional change. This study aimed to identify factors correlated with a large postneurosurgical positional brain shift (PBS). Sixty-seven patients who underwent neurosurgical procedures had upright computed tomography (CT) scan using settings similar to those of conventional supine CT. The presence of a clinically significant PBS, defined as a brain shift of ≥ 5 mm caused by positional change, was evaluated. The clinical and radiological findings were investigated to identify factors associated with a larger PBS. As a result, twenty-one patients had a clinically significant PBS. The univariate analysis showed that supratentorial lesion location, intra-axial lesion type, craniectomy procedure, and residual intracranial air were the predictors of PBS. Based on the multivariate analysis, craniectomy procedure (p < 0.001) and residual intracranial air volume (p = 0.004) were the predictors of PBS. In a sub-analysis of post-craniectomy patients, PBS was larger in patients with supratentorial craniectomy site and parenchymal brain injury. A large craniectomy area and long interval from craniectomy were correlated with the extent of PBS. In conclusion, patients who undergo craniectomy and those with residual intracranial air can present with a large PBS. In post-craniectomy patients, the predisposing factors of a large PBS are supratentorial craniectomy, presence of parenchymal injury, large skull defect area, and long interval from craniectomy. These findings can contribute to safe mobilization among postneurosurgical patients and the risk assessment of sinking skin flap syndrome.
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spelling doaj.art-2f4df5a31524431288da3e2d4bfa60102022-12-22T00:30:29ZengNature PortfolioScientific Reports2045-23222022-06-011211910.1038/s41598-022-13276-0Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomographyKeisuke Yoshida0Masahiro Toda1Yoshitake Yamada2Minoru Yamada3Yoichi Yokoyama4Kei Tsutsumi5Hirokazu Fujiwara6Kenzo Kosugi7Masahiro Jinzaki8Department of Neurosurgery, Keio University School of MedicineDepartment of Neurosurgery, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineDepartment of Neurosurgery, Keio University School of MedicineDepartment of Radiology, Keio University School of MedicineAbstract Only few studies have assessed brain shift caused by positional change. This study aimed to identify factors correlated with a large postneurosurgical positional brain shift (PBS). Sixty-seven patients who underwent neurosurgical procedures had upright computed tomography (CT) scan using settings similar to those of conventional supine CT. The presence of a clinically significant PBS, defined as a brain shift of ≥ 5 mm caused by positional change, was evaluated. The clinical and radiological findings were investigated to identify factors associated with a larger PBS. As a result, twenty-one patients had a clinically significant PBS. The univariate analysis showed that supratentorial lesion location, intra-axial lesion type, craniectomy procedure, and residual intracranial air were the predictors of PBS. Based on the multivariate analysis, craniectomy procedure (p < 0.001) and residual intracranial air volume (p = 0.004) were the predictors of PBS. In a sub-analysis of post-craniectomy patients, PBS was larger in patients with supratentorial craniectomy site and parenchymal brain injury. A large craniectomy area and long interval from craniectomy were correlated with the extent of PBS. In conclusion, patients who undergo craniectomy and those with residual intracranial air can present with a large PBS. In post-craniectomy patients, the predisposing factors of a large PBS are supratentorial craniectomy, presence of parenchymal injury, large skull defect area, and long interval from craniectomy. These findings can contribute to safe mobilization among postneurosurgical patients and the risk assessment of sinking skin flap syndrome.https://doi.org/10.1038/s41598-022-13276-0
spellingShingle Keisuke Yoshida
Masahiro Toda
Yoshitake Yamada
Minoru Yamada
Yoichi Yokoyama
Kei Tsutsumi
Hirokazu Fujiwara
Kenzo Kosugi
Masahiro Jinzaki
Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
Scientific Reports
title Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
title_full Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
title_fullStr Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
title_full_unstemmed Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
title_short Cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift: evaluation using upright computed tomography
title_sort cranial defect and pneumocephalus are associated with significant postneurosurgical positional brain shift evaluation using upright computed tomography
url https://doi.org/10.1038/s41598-022-13276-0
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