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Acoustic neuroma surgery for preservation of hearing: technique and experience in the Chinese PLA General Hospital.

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Title: Acoustic neuroma surgery for preservation of hearing: technique and experience in the Chinese PLA General Hospital.
Authors: Han, Dong-Yi (AUTHOR), Yu, Li-Mei (AUTHOR), Yu, Li-Ming (AUTHOR), Ji, Fei (AUTHOR), Young, Wei-Yen (AUTHOR), Yang, Shi-Ming (AUTHOR)
Source: Acta Oto-Laryngologica. May2010, Vol. 130 Issue 5, p583-592. 10p. 3 Color Photographs, 1 Chart, 3 Graphs.
Subjects: Acoustic neuroma, Surgery, Deafness prevention, Endoscopy, Real-time control
Geographic Terms: China
Abstract: Conclusions: Good hearing preservation can be achieved during acoustic neuroma surgery assisted by real-time dynamic auditory monitoring and ear endoscopic techniques. Preservation of the arachnoid and its blood supply are important for hearing preservation, and injury to the internal auditory artery is the most important cause of hearing loss. Objective: To explore techniques to preserve hearing during acoustic neuroma resection. Methods: This was a retrospective case review in a hospital setting. From July 2003 to July 2007, intraoperative auditory monitoring using auditory brainstem response (ABR) and electrocochleography (EcochG) was conducted in 18 of 138 patients undergoing surgery for acoustic neuroma who had preoperative hearing. The retrosigmoid approach was used for 16 complete resections and 2 patients underwent partial resections. Assisted endoscopic surgery was conducted for 10 ears. The main outcome measure was preservation of hearing, assessed using the classification method of the American Institute of Otolaryngology-Head and Neck Surgery. Results: Hearing was preserved in 11 of the 18 patients (61.1%): 2 of 5 patients whose tumors were larger than 20 mm (40%), and 9 of 13 patients with smaller tumors (69.2%). Among the 10 cases of ear endoscope-assisted surgery, hearing was preserved in 8 (80%). Intraoperative monitoring revealed that the waveform was influenced when the posterior labium of the internal acoustic meatus was ground and drilled, or when traction or electrocoagulation was performed near the opening of the internal acoustic meatus, especially when the internal auditory artery was clamped, the tumor in the internal acoustic meatus was treated, and the arachnoid vessels in the inner-most layer of the tumor surface were clamped or electrocoagulated. [ABSTRACT FROM AUTHOR]
Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Acoustic neuroma surgery for preservation of hearing: technique and experience in the Chinese PLA General Hospital.
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  Data: <searchLink fieldCode="AR" term="%22Han%2C+Dong-Yi%22">Han, Dong-Yi</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Li-Mei%22">Yu, Li-Mei</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Li-Ming%22">Yu, Li-Ming</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Fei%22">Ji, Fei</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Young%2C+Wei-Yen%22">Young, Wei-Yen</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Shi-Ming%22">Yang, Shi-Ming</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Acta+Oto-Laryngologica%22">Acta Oto-Laryngologica</searchLink>. May2010, Vol. 130 Issue 5, p583-592. 10p. 3 Color Photographs, 1 Chart, 3 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Acoustic+neuroma%22">Acoustic neuroma</searchLink><br /><searchLink fieldCode="DE" term="%22Surgery%22">Surgery</searchLink><br /><searchLink fieldCode="DE" term="%22Deafness+prevention%22">Deafness prevention</searchLink><br /><searchLink fieldCode="DE" term="%22Endoscopy%22">Endoscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Real-time+control%22">Real-time control</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Conclusions: Good hearing preservation can be achieved during acoustic neuroma surgery assisted by real-time dynamic auditory monitoring and ear endoscopic techniques. Preservation of the arachnoid and its blood supply are important for hearing preservation, and injury to the internal auditory artery is the most important cause of hearing loss. Objective: To explore techniques to preserve hearing during acoustic neuroma resection. Methods: This was a retrospective case review in a hospital setting. From July 2003 to July 2007, intraoperative auditory monitoring using auditory brainstem response (ABR) and electrocochleography (EcochG) was conducted in 18 of 138 patients undergoing surgery for acoustic neuroma who had preoperative hearing. The retrosigmoid approach was used for 16 complete resections and 2 patients underwent partial resections. Assisted endoscopic surgery was conducted for 10 ears. The main outcome measure was preservation of hearing, assessed using the classification method of the American Institute of Otolaryngology-Head and Neck Surgery. Results: Hearing was preserved in 11 of the 18 patients (61.1%): 2 of 5 patients whose tumors were larger than 20 mm (40%), and 9 of 13 patients with smaller tumors (69.2%). Among the 10 cases of ear endoscope-assisted surgery, hearing was preserved in 8 (80%). Intraoperative monitoring revealed that the waveform was influenced when the posterior labium of the internal acoustic meatus was ground and drilled, or when traction or electrocoagulation was performed near the opening of the internal acoustic meatus, especially when the internal auditory artery was clamped, the tumor in the internal acoustic meatus was treated, and the arachnoid vessels in the inner-most layer of the tumor surface were clamped or electrocoagulated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Acoustic neuroma
        Type: general
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      – SubjectFull: Deafness prevention
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      – SubjectFull: China
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      – TitleFull: Acoustic neuroma surgery for preservation of hearing: technique and experience in the Chinese PLA General Hospital.
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              Text: May2010
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