Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant

Detalhes bibliográficos
Autor(a) principal: Braga,Gabriela Pereira Bom
Data de Publicação: 2018
Outros Autores: Gebrim,Eloisa, Balachandran,Ramya, Noble,Jack, Labadie,Robert, Bento,Ricardo Ferreira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: International Archives of Otorhinolaryngology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642018000300260
Resumo: Abstract Introduction The literature shows that there are anatomical changes on the temporal bone anatomy during the first four years of life in children. Therefore, we decided to evaluate the temporal bone anatomy regarding the cochlear implant surgery in stillbirths between 32 and 40 weeks of gestational age using computed tomography to simulate the trajectory of the drill to the scala timpani avoiding vital structures. Objectives To measure the distances of the simulated trajectory to the facial recess, cochlea, ossicular chain and tympanic membrane, while performing the minimally invasive cochlear implant technique, using the Improvise imaging software (Vanderbilt University, Nashville, TN, US). Methods An experimental study with 9 stillbirth specimens, with gestational ages ranging between 32 and 40 weeks, undergoing tomographic evaluation with individualization and reconstruction of the labyrinth, facial nerve, ossicular chain, tympanic membrane and cochlea followed by drill path definition to the scala tympani. Improvise was used for the computed tomography (CT) evaluation and for the reconstruction of the structures and trajectory of the drill. Results Range of the distance of the trajectory to the facial nerve: 0.58 to 1.71mm. to the ossicular chain: 0.38 to 1.49 mm; to the tympanic membrane: 0.85 to 1.96 mm; total range of the distance of the trajectory: 5.92 to 12.65 mm. Conclusion The measurements of the relationship between the drill and the anatomical structures of the middle ear and the simulation of the trajectory showed that the middle ear cavity at 32 weeks was big enough for surgical procedures such as cochlear implants. Although cochlear implantation at birth is not an indication yet, this study shows that the technique may be an option in the future.
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spelling Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implantcochlear implantationmiddle earhearing loss, sensorineuraltemporal bone / anatomycochleaexperimental studiesAbstract Introduction The literature shows that there are anatomical changes on the temporal bone anatomy during the first four years of life in children. Therefore, we decided to evaluate the temporal bone anatomy regarding the cochlear implant surgery in stillbirths between 32 and 40 weeks of gestational age using computed tomography to simulate the trajectory of the drill to the scala timpani avoiding vital structures. Objectives To measure the distances of the simulated trajectory to the facial recess, cochlea, ossicular chain and tympanic membrane, while performing the minimally invasive cochlear implant technique, using the Improvise imaging software (Vanderbilt University, Nashville, TN, US). Methods An experimental study with 9 stillbirth specimens, with gestational ages ranging between 32 and 40 weeks, undergoing tomographic evaluation with individualization and reconstruction of the labyrinth, facial nerve, ossicular chain, tympanic membrane and cochlea followed by drill path definition to the scala tympani. Improvise was used for the computed tomography (CT) evaluation and for the reconstruction of the structures and trajectory of the drill. Results Range of the distance of the trajectory to the facial nerve: 0.58 to 1.71mm. to the ossicular chain: 0.38 to 1.49 mm; to the tympanic membrane: 0.85 to 1.96 mm; total range of the distance of the trajectory: 5.92 to 12.65 mm. Conclusion The measurements of the relationship between the drill and the anatomical structures of the middle ear and the simulation of the trajectory showed that the middle ear cavity at 32 weeks was big enough for surgical procedures such as cochlear implants. Although cochlear implantation at birth is not an indication yet, this study shows that the technique may be an option in the future.Fundação Otorrinolaringologia2018-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642018000300260International Archives of Otorhinolaryngology v.22 n.3 2018reponame:International Archives of Otorhinolaryngologyinstname:Fundação Otorrinolaringologia (FORL)instacron:FORL10.1055/s-0037-1606612info:eu-repo/semantics/openAccessBraga,Gabriela Pereira BomGebrim,EloisaBalachandran,RamyaNoble,JackLabadie,RobertBento,Ricardo Ferreiraeng2018-10-08T00:00:00Zoai:scielo:S1809-48642018000300260Revistahttps://www.scielo.br/j/iao/https://old.scielo.br/oai/scielo-oai.php||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br1809-48641809-4864opendoar:2018-10-08T00:00International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL)false
dc.title.none.fl_str_mv Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
title Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
spellingShingle Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
Braga,Gabriela Pereira Bom
cochlear implantation
middle ear
hearing loss, sensorineural
temporal bone / anatomy
cochlea
experimental studies
title_short Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
title_full Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
title_fullStr Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
title_full_unstemmed Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
title_sort Evaluation of the Facial Recess and Cochlea on the Temporal Bone of Stillbirths regarding the Percutaneous Cochlear Implant
author Braga,Gabriela Pereira Bom
author_facet Braga,Gabriela Pereira Bom
Gebrim,Eloisa
Balachandran,Ramya
Noble,Jack
Labadie,Robert
Bento,Ricardo Ferreira
author_role author
author2 Gebrim,Eloisa
Balachandran,Ramya
Noble,Jack
Labadie,Robert
Bento,Ricardo Ferreira
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Braga,Gabriela Pereira Bom
Gebrim,Eloisa
Balachandran,Ramya
Noble,Jack
Labadie,Robert
Bento,Ricardo Ferreira
dc.subject.por.fl_str_mv cochlear implantation
middle ear
hearing loss, sensorineural
temporal bone / anatomy
cochlea
experimental studies
topic cochlear implantation
middle ear
hearing loss, sensorineural
temporal bone / anatomy
cochlea
experimental studies
description Abstract Introduction The literature shows that there are anatomical changes on the temporal bone anatomy during the first four years of life in children. Therefore, we decided to evaluate the temporal bone anatomy regarding the cochlear implant surgery in stillbirths between 32 and 40 weeks of gestational age using computed tomography to simulate the trajectory of the drill to the scala timpani avoiding vital structures. Objectives To measure the distances of the simulated trajectory to the facial recess, cochlea, ossicular chain and tympanic membrane, while performing the minimally invasive cochlear implant technique, using the Improvise imaging software (Vanderbilt University, Nashville, TN, US). Methods An experimental study with 9 stillbirth specimens, with gestational ages ranging between 32 and 40 weeks, undergoing tomographic evaluation with individualization and reconstruction of the labyrinth, facial nerve, ossicular chain, tympanic membrane and cochlea followed by drill path definition to the scala tympani. Improvise was used for the computed tomography (CT) evaluation and for the reconstruction of the structures and trajectory of the drill. Results Range of the distance of the trajectory to the facial nerve: 0.58 to 1.71mm. to the ossicular chain: 0.38 to 1.49 mm; to the tympanic membrane: 0.85 to 1.96 mm; total range of the distance of the trajectory: 5.92 to 12.65 mm. Conclusion The measurements of the relationship between the drill and the anatomical structures of the middle ear and the simulation of the trajectory showed that the middle ear cavity at 32 weeks was big enough for surgical procedures such as cochlear implants. Although cochlear implantation at birth is not an indication yet, this study shows that the technique may be an option in the future.
publishDate 2018
dc.date.none.fl_str_mv 2018-07-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642018000300260
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642018000300260
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1055/s-0037-1606612
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Otorrinolaringologia
publisher.none.fl_str_mv Fundação Otorrinolaringologia
dc.source.none.fl_str_mv International Archives of Otorhinolaryngology v.22 n.3 2018
reponame:International Archives of Otorhinolaryngology
instname:Fundação Otorrinolaringologia (FORL)
instacron:FORL
instname_str Fundação Otorrinolaringologia (FORL)
instacron_str FORL
institution FORL
reponame_str International Archives of Otorhinolaryngology
collection International Archives of Otorhinolaryngology
repository.name.fl_str_mv International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL)
repository.mail.fl_str_mv ||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br
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