Standard and limitation of intraoperative monitoring of the visual evoked potential

Kodama, Kunihiko; Goto, Tetsuya; Sato, Atsushi; Sakai, Keiichi; Tanaka, Yuichiro; Hongo, Kazuhiro

doi:10.1007/s00701-010-0600-2

Cited by 115 publications

(78 citation statements)

References 17 publications

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“…9,17 Intraoperative VEP monitoring was used in 18 of 32 patients with paraclinoid carotid artery aneurysms, including SHA aneurysms, who have been treated since 2004. When the contralateral approach was used, the SHA related to the aneurysm neck was temporarily occluded (Fig.…”

Section: Visual Evoked Potential Monitoringmentioning

confidence: 99%

Role of superior hypophyseal artery in visual function impairment after paraclinoid carotid artery aneurysm surgery

Horiuchi

Goto

Tanaka

et al. 2015

JNS

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A ccording to the related branching artery or anatomical relationships, there are many classifications of intradural proximal carotid artery aneurysms. In the literature, the term "paraclinoid carotid aneurysm" is often used because it includes all carotid artery aneurysms originating from the internal carotid artery (ICA) between the distal dural ring and the origin of the posterior communicating artery. 11,12,21 The superior hypophyseal artery (SHA) is well known as a branching artery of paraclinoid carotid artery aneurysms 16,21,22 and supplies the pituitary stalk, optic nerve, and chiasm. 8,14,18 Therefore, sacrifice of the SHA may be a factor for postoperative visual impairment. 4,9,13 Although a few case reports have described postoperative visual impairment associated with SHA occlusion, 4,9,13 only small series of SHA aneurysm surgery cases have focused on postoperative visual function and intraoperative SHA status. We report our experience with 72 SHA aneurysms in 70 patients and our analysis of the postoperative visual function associated with the SHA. MethodsThis study was approved by the institutional review board at the Shinshu University School of Medicine. Patient PopulationBetween January 1991 and December 2013, a total of 181 patients harboring 190 paraclinoid carotid artery anabbreviatioNs ICA = internal carotid artery; SHA = superior hypophyseal artery; VEP = visual evoked potential. subMitted June 3, 2014. accePted December 29, 2014. iNclude wheN citiNg Published online February 20, 2015; DOI: 10.3171/2014.12.JNS141218. disclosure The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper. This study was partly supported by the Japan Society for the Promotion of Science KAKENHI grant no. 25462251 (to T.H). obJect Although a number of studies have assessed the surgical treatment of paraclinoid-segment carotid artery aneurysms and resulting visual complications, less attention has been given to the results with respect to the superior hypophyseal artery (SHA). The authors evaluated the relationship between the aneurysm, the SHA itself, and postoperative visual function in patients with ruptured and unruptured SHA aneurysms. Methods From January 1991 through December 2013, 181 patients with 190 paraclinoid carotid artery aneurysms received treatment at Shinshu University Hospital and its affiliated hospitals. The authors retrospectively analyzed charts, operative records, operative videos, and neuroimaging findings for these patients with or without postoperative visual complications. results The authors identified 72 SHA aneurysms in 70 patients (mean age 58 years). Of 69 patients (1 patient died) evaluated, postoperative visual complications occurred in 9 (13.0%). Although the aneurysm size and SHA sacrifice did not lead to postoperative visual impairment, simultaneous treatment of bilateral aneurysms was a risk factor for postoperative visual complications. coNclusioNs Unilateral SHA impairment may be safe (i.e., i...

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Section: Visual Evoked Potential Monitoringmentioning

confidence: 99%

Role of superior hypophyseal artery in visual function impairment after paraclinoid carotid artery aneurysm surgery

Horiuchi

Goto

Tanaka

et al. 2015

JNS

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“…Finally, real time monitoring is impractical due to time required to obtain each waveform, plus minimum visual function must be defined and its changes take 32 S to measure. Then turns out to be impossible to correlate injuries and causative events or timely prevent it [6,7,31,65,66].…”

Section: Cerebral Surgerymentioning

confidence: 99%

Intraoperative Evoked Potentials: A Review of Clinical Impact and Limitations

Marafona¹,

Machado²

2017

J Anesth Clin Res

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Background: Nowadays, intraoperative evoked potentials are recommended in a variety of procedures but there is still a lack of standard protocols and consensus about warning criteria. Moreover, studies are now being made to fundament its risk-beneficial ratio through recordings' predictive value for short and long term outcomes. Furthermore, wake up test limitations encouraged intraoperative evoked potentials research, a reliable monitoring technology.

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“…Stimulation der Sehbahn möglich geworden [22]. Diese Messung kommt bei allen Operationen zum Einsatz, bei welchen Auswirkungen auf die Sehbahn als Komplikationen auftreten können.…”

Section: Mit Der Verfügbarkeit Von Leuchtstarken Leuchtdioden (Led) Iunclassified

Intraoperatives neurophysiologisches Monitoring verbessert das Outcome in der Neurochirurgie

Sarnthein

Krayenbühl

Actor

et al. 2012

Praxis

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Standard and limitation of intraoperative monitoring of the visual evoked potential

Abstract: Background:

Cited by 115 publications

References 17 publications

Role of superior hypophyseal artery in visual function impairment after paraclinoid carotid artery aneurysm surgery

Role of superior hypophyseal artery in visual function impairment after paraclinoid carotid artery aneurysm surgery

Intraoperative Evoked Potentials: A Review of Clinical Impact and Limitations

Intraoperatives neurophysiologisches Monitoring verbessert das Outcome in der Neurochirurgie

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