Impact of vestibular nerve preservation on facial and hearing outcomes in small vestibular schwannoma surgery: a technical feasibility study

Object Preservation of cochlear nerve function in vestibular schwannoma (VS) removal is usually dependent on tumor size and preoperative hearing status. Tumor origin as an independent factor has not been systematically investigated. Methods A series of 90 patients with VSs, who underwent surgery via a suboccipitolateral route, was evaluated with respect to cochlear nerve function, tumor size, radiological findings, and intraoperatively confirmed tumor origin. All patients were reevaluated 12 months after surgery. Results Despite comparable preoperative cochlear nerve status and larger tumor sizes, hearing preservation was achieved in 42% of patients with tumor originating from the superior vestibular nerve, compared with 16% of those with tumor originating from the inferior vestibular nerve. Conclusions Tumor origin is an important prognostic factor for cochlear nerve preservation in VS surgery.

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Technical feasibility study of modular dish solar electric systems

10.2172/7359629 ◽

1976 ◽

Author(s):

B. P. Gupta ◽

R. L. Buchholz ◽

E. M. McBride ◽

D. C. Gray ◽

W. M. Bohan

Keyword(s):

Feasibility Study ◽

Technical Feasibility

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Su1339 Technical Feasibility Study of Eus-Guided Hydrogel Microparticle Injection Into the Pancreatic Head-Duodenal Wall Interface in a Cadaveric Model

Gastrointestinal Endoscopy ◽

10.1016/j.gie.2017.03.785 ◽

2017 ◽

Vol 85 (5) ◽

pp. AB340-AB341

Author(s):

Seong-Hun Kim ◽

Kai Ding ◽

Avani Rao ◽

Lauren Rosati ◽

Amol Narang ◽

...

Keyword(s):

Feasibility Study ◽

Pancreatic Head ◽

Duodenal Wall ◽

Technical Feasibility ◽

Hydrogel Microparticle ◽

Cadaveric Model

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766 Endoscopic Surgery for Sporadic Vestibular Schwannoma Resection: A Systematic Review of Surgical Outcomes

British Journal of Surgery ◽

10.1093/bjs/znab134.324 ◽

2021 ◽

Vol 108 (Supplement_2) ◽

Author(s):

S Chiuta ◽

S Raza-Knight ◽

A Alalade

Keyword(s):

Facial Nerve ◽

Hearing Preservation ◽

Extent Of Resection ◽

Current Data ◽

Resection Rate ◽

Eighth Cranial Nerve ◽

Nerve Preservation ◽

Microsurgical Resection ◽

Hearing Outcomes ◽

Series Report

Abstract Introduction Vestibular schwannomas (VS) are benign intracranial tumours originating from the vestibular division of the eighth cranial nerve. The mainstay of their surgical management is microsurgery, other options are radiotherapy or radiological monitoring. Endoscopy (ES) is becoming widely used in neurosurgery and may have a role in improving visualisation and outcomes by enhancing extent of resection, facial nerve, and hearing preservation in VS resection and describe the postoperative outcomes. Method The review was conducted according to the PRISMA guidelines and yielded 31 studies for inclusion. Systematic searches of literature databases were done for studies where endoscopic-assisted and/or endoscopic resection of VS were reported. Results ES facial nerve preservation rates (median 91.3%, range 39.0 - 100%) were comparable to microsurgical treatment. Hearing outcomes were more variable in ES series and were under-reported. A median gross total resection rate of 97.4% (61.0 - 100%) was achieved in the ES series. Conclusions Current data suggest that ES-assisted resection of sporadic VS is not inferior to microsurgical resection with respect to facial nerve outcomes and extent of resection. However, some ES series report poor hearing outcomes, which are under-reported in the literature.

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Making Fired Bricks With Spent Equilibrium Catalyst-A Technical Feasibility Study

The Journal of Solid Waste Technology and Management ◽

10.5276/jswtm.2009.200 ◽

2009 ◽

Vol 35 (4) ◽

pp. 200-208

Author(s):

Mei-In (Melissa) Chou ◽

Lu-Ming Chen ◽

Yi-Chieh Lai ◽

Sheng-Fu (Joseph) Chou

Keyword(s):

Feasibility Study ◽

Technical Feasibility ◽

Fired Bricks ◽

Equilibrium Catalyst

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Technical Feasibility Study of an E-Shaped Electromagnetic Guideway for HTS Maglev

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2020.2988873 ◽

2020 ◽

Vol 30 (6) ◽

pp. 1-10

Author(s):

Wei Hong ◽

Ying Xin ◽

Changqi Wang ◽

Yuyan Wen ◽

Chaoqun Zhao ◽

...

Keyword(s):

Feasibility Study ◽

Technical Feasibility ◽

Hts Maglev

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Technical feasibility study on improving minimum miscibility pressure of CO2 by adding LPG

Underground Storage of CO2 and Energy ◽

10.1201/b11592-17 ◽

2010 ◽

pp. 79-82

Author(s):

Y Yang ◽

J Qin ◽

D Ma ◽

S Yang ◽

H Yu

Keyword(s):

Feasibility Study ◽

Technical Feasibility ◽

Minimum Miscibility Pressure

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Diamond knife dissection technique for nerve preservation during resection of large vestibular schwannomas

Neurosurgical Focus: Video ◽

10.3171/2021.7.focvid21104 ◽

2021 ◽

Vol 5 (2) ◽

pp. V8

Author(s):

Julia Shawarba ◽

Cand Med ◽

Matthias Tomschik ◽

Karl Roessler

Keyword(s):

Vestibular Schwannoma ◽

Facial Nerve Palsy ◽

Hearing Preservation ◽

Vestibular Schwannomas ◽

Nerve Preservation ◽

Dissection Techniques ◽

Dissection Technique ◽

Large Vestibular Schwannoma ◽

Facial Function ◽

Diamond Knife

Facial and cochlear nerve preservation in large vestibular schwannomas is a major challenge. Bimanual pincers or plate-knife dissection techniques have been described as crucial for nerve preservation. The authors demonstrate a recently applied diamond knife dissection technique to peel the nerves from the tumor capsule. This technique minimizes the nerve trauma significantly, and complete resection of a large vestibular schwannoma without any facial nerve palsy and hearing preservation is possible. The authors illustrate this technique during surgery of a 2.6-cm vestibular schwannoma in a 27-year-old male patient resulting in normal facial function and preserved hearing postoperatively. The video can be found here: https://stream.cadmore.media/r10.3171/2021.7.FOCVID21104

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