Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma

Fahd Alharbi; Mohammed Rifaat Ahmed

doi:doi:10.11648/j.ajcem.20140205.11

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Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma

Fahd Alharbi, Mohammed Rifaat Ahmed

Published in American Journal of Clinical and Experimental Medicine (Volume 2, Issue 5)

Received: 29 August 2014 Accepted: 15 September 2014 Published: 30 September 2014

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Abstract

Background: drilling on the intact ossicular chain produce acoustic trauma resulting in inner ear structure damage, these changes occurred in organ of corti with disruption of cytoarchitecture and cellular degeneration. Objective: To evaluate the changes in inner ear structure and function after drill - induced acoustic trauma in guinea pigs by Scanning Electron Microscope (SEM) and Otoacoustic emission (OAE). Methods and Material: An experimental study conducted on healthy pigmented guinea pigs in Otolaryngology-Head and neck Surgery Department at Jazan University, Kingdom of Saudi Arabia. Results: Thirty guinea pigs were divided into a control group (N) to document the baseline Distortion Product Otoacoustic Emissions (DPOAEs) and the normal scanning electron microscopic (SEM) morphology of the inner ear, Drill induced acoustic trauma group (D) to evaluate the effect of induced sensorineural hearing loss using micromotor drill (20,000rpm) maximum speed against the body of incus and 2weeks postoperative group (2W) to evaluate to the effect of spontaneous recovery after 2 weeks from induced sensorineural hearing loss which showed spontaneous although incomplete recovery of the DPOAEs amplitudes and SEM morphology with scar tissue replacing the damaged outer hair cells. Conclusion: Avoid touching ossicular chain when using high speed drill during ear surgery as this may cause structural and functional damage to the inner ear. Spontaneous recovery could be occurs after acoustic trauma but incomplete recovery with permanent scar formation in outer hair cells may occur.

Published in	American Journal of Clinical and Experimental Medicine (Volume 2, Issue 5)
DOI	10.11648/j.ajcem.20140205.11
Page(s)	90-96
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Inner Ear, Sensorineural Hearing Loss, Otoacoustic Emission, Acoustic Trauma

References

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APA Style

Fahd Alharbi, Mohammed Rifaat Ahmed. (2014). Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. American Journal of Clinical and Experimental Medicine, 2(5), 90-96. https://doi.org/10.11648/j.ajcem.20140205.11

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ACS Style

Fahd Alharbi; Mohammed Rifaat Ahmed. Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. Am. J. Clin. Exp. Med. 2014, 2(5), 90-96. doi: 10.11648/j.ajcem.20140205.11

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AMA Style

Fahd Alharbi, Mohammed Rifaat Ahmed. Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. Am J Clin Exp Med. 2014;2(5):90-96. doi: 10.11648/j.ajcem.20140205.11

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@article{10.11648/j.ajcem.20140205.11,
  author = {Fahd Alharbi and Mohammed Rifaat Ahmed},
  title = {Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma},
  journal = {American Journal of Clinical and Experimental Medicine},
  volume = {2},
  number = {5},
  pages = {90-96},
  doi = {10.11648/j.ajcem.20140205.11},
  url = {https://doi.org/10.11648/j.ajcem.20140205.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajcem.20140205.11},
  abstract = {Background: drilling on the intact ossicular chain produce acoustic trauma resulting in inner ear structure damage, these changes occurred in organ of corti with disruption of cytoarchitecture and cellular degeneration. Objective: To evaluate the changes in inner ear structure and function after drill - induced acoustic trauma in guinea pigs by Scanning Electron Microscope (SEM) and Otoacoustic emission (OAE). Methods and Material: An experimental study conducted on healthy pigmented guinea pigs in Otolaryngology-Head and neck Surgery Department at Jazan University, Kingdom of Saudi Arabia. Results: Thirty guinea pigs were divided into a control group (N) to document the baseline Distortion Product Otoacoustic Emissions (DPOAEs) and the normal scanning electron microscopic (SEM) morphology of the inner ear, Drill induced acoustic trauma group (D) to evaluate the effect of induced sensorineural hearing loss using micromotor drill (20,000rpm) maximum speed against the body of incus and 2weeks postoperative group (2W) to evaluate to the effect of spontaneous recovery after 2 weeks from induced sensorineural hearing loss which showed spontaneous although incomplete recovery of the DPOAEs amplitudes and SEM morphology with scar tissue replacing the damaged outer hair cells. Conclusion: Avoid touching ossicular chain when using high speed drill during ear surgery as this may cause structural and functional damage to the inner ear. Spontaneous recovery could be occurs after acoustic trauma but incomplete recovery with permanent scar formation in outer hair cells may occur.},
 year = {2014}
}

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TY  - JOUR
T1  - Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma
AU  - Fahd Alharbi
AU  - Mohammed Rifaat Ahmed
Y1  - 2014/09/30
PY  - 2014
N1  - https://doi.org/10.11648/j.ajcem.20140205.11
DO  - 10.11648/j.ajcem.20140205.11
T2  - American Journal of Clinical and Experimental Medicine
JF  - American Journal of Clinical and Experimental Medicine
JO  - American Journal of Clinical and Experimental Medicine
SP  - 90
EP  - 96
PB  - Science Publishing Group
SN  - 2330-8133
UR  - https://doi.org/10.11648/j.ajcem.20140205.11
AB  - Background: drilling on the intact ossicular chain produce acoustic trauma resulting in inner ear structure damage, these changes occurred in organ of corti with disruption of cytoarchitecture and cellular degeneration. Objective: To evaluate the changes in inner ear structure and function after drill - induced acoustic trauma in guinea pigs by Scanning Electron Microscope (SEM) and Otoacoustic emission (OAE). Methods and Material: An experimental study conducted on healthy pigmented guinea pigs in Otolaryngology-Head and neck Surgery Department at Jazan University, Kingdom of Saudi Arabia. Results: Thirty guinea pigs were divided into a control group (N) to document the baseline Distortion Product Otoacoustic Emissions (DPOAEs) and the normal scanning electron microscopic (SEM) morphology of the inner ear, Drill induced acoustic trauma group (D) to evaluate the effect of induced sensorineural hearing loss using micromotor drill (20,000rpm) maximum speed against the body of incus and 2weeks postoperative group (2W) to evaluate to the effect of spontaneous recovery after 2 weeks from induced sensorineural hearing loss which showed spontaneous although incomplete recovery of the DPOAEs amplitudes and SEM morphology with scar tissue replacing the damaged outer hair cells. Conclusion: Avoid touching ossicular chain when using high speed drill during ear surgery as this may cause structural and functional damage to the inner ear. Spontaneous recovery could be occurs after acoustic trauma but incomplete recovery with permanent scar formation in outer hair cells may occur.
VL  - 2
IS  - 5
ER  -

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Author Information

Fahd Alharbi

Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Jazan University, 2349-Almarjan-Industrial Zone Rd., Unit No. 1, Jazan, Saudi Arabia
Mohammed Rifaat Ahmed

Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Jazan University, 2349-Almarjan-Industrial Zone Rd., Unit No. 1, Jazan, Saudi Arabia

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APA Style

Fahd Alharbi, Mohammed Rifaat Ahmed. (2014). Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. American Journal of Clinical and Experimental Medicine, 2(5), 90-96. https://doi.org/10.11648/j.ajcem.20140205.11

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ACS Style

Fahd Alharbi; Mohammed Rifaat Ahmed. Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. Am. J. Clin. Exp. Med. 2014, 2(5), 90-96. doi: 10.11648/j.ajcem.20140205.11

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AMA Style

Fahd Alharbi, Mohammed Rifaat Ahmed. Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma. Am J Clin Exp Med. 2014;2(5):90-96. doi: 10.11648/j.ajcem.20140205.11

Copy | Download

@article{10.11648/j.ajcem.20140205.11,
  author = {Fahd Alharbi and Mohammed Rifaat Ahmed},
  title = {Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma},
  journal = {American Journal of Clinical and Experimental Medicine},
  volume = {2},
  number = {5},
  pages = {90-96},
  doi = {10.11648/j.ajcem.20140205.11},
  url = {https://doi.org/10.11648/j.ajcem.20140205.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajcem.20140205.11},
  abstract = {Background: drilling on the intact ossicular chain produce acoustic trauma resulting in inner ear structure damage, these changes occurred in organ of corti with disruption of cytoarchitecture and cellular degeneration. Objective: To evaluate the changes in inner ear structure and function after drill - induced acoustic trauma in guinea pigs by Scanning Electron Microscope (SEM) and Otoacoustic emission (OAE). Methods and Material: An experimental study conducted on healthy pigmented guinea pigs in Otolaryngology-Head and neck Surgery Department at Jazan University, Kingdom of Saudi Arabia. Results: Thirty guinea pigs were divided into a control group (N) to document the baseline Distortion Product Otoacoustic Emissions (DPOAEs) and the normal scanning electron microscopic (SEM) morphology of the inner ear, Drill induced acoustic trauma group (D) to evaluate the effect of induced sensorineural hearing loss using micromotor drill (20,000rpm) maximum speed against the body of incus and 2weeks postoperative group (2W) to evaluate to the effect of spontaneous recovery after 2 weeks from induced sensorineural hearing loss which showed spontaneous although incomplete recovery of the DPOAEs amplitudes and SEM morphology with scar tissue replacing the damaged outer hair cells. Conclusion: Avoid touching ossicular chain when using high speed drill during ear surgery as this may cause structural and functional damage to the inner ear. Spontaneous recovery could be occurs after acoustic trauma but incomplete recovery with permanent scar formation in outer hair cells may occur.},
 year = {2014}
}

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TY  - JOUR
T1  - Changes in Inner Ear Structure and Function after Drill - Induced Acoustic Trauma
AU  - Fahd Alharbi
AU  - Mohammed Rifaat Ahmed
Y1  - 2014/09/30
PY  - 2014
N1  - https://doi.org/10.11648/j.ajcem.20140205.11
DO  - 10.11648/j.ajcem.20140205.11
T2  - American Journal of Clinical and Experimental Medicine
JF  - American Journal of Clinical and Experimental Medicine
JO  - American Journal of Clinical and Experimental Medicine
SP  - 90
EP  - 96
PB  - Science Publishing Group
SN  - 2330-8133
UR  - https://doi.org/10.11648/j.ajcem.20140205.11
AB  - Background: drilling on the intact ossicular chain produce acoustic trauma resulting in inner ear structure damage, these changes occurred in organ of corti with disruption of cytoarchitecture and cellular degeneration. Objective: To evaluate the changes in inner ear structure and function after drill - induced acoustic trauma in guinea pigs by Scanning Electron Microscope (SEM) and Otoacoustic emission (OAE). Methods and Material: An experimental study conducted on healthy pigmented guinea pigs in Otolaryngology-Head and neck Surgery Department at Jazan University, Kingdom of Saudi Arabia. Results: Thirty guinea pigs were divided into a control group (N) to document the baseline Distortion Product Otoacoustic Emissions (DPOAEs) and the normal scanning electron microscopic (SEM) morphology of the inner ear, Drill induced acoustic trauma group (D) to evaluate the effect of induced sensorineural hearing loss using micromotor drill (20,000rpm) maximum speed against the body of incus and 2weeks postoperative group (2W) to evaluate to the effect of spontaneous recovery after 2 weeks from induced sensorineural hearing loss which showed spontaneous although incomplete recovery of the DPOAEs amplitudes and SEM morphology with scar tissue replacing the damaged outer hair cells. Conclusion: Avoid touching ossicular chain when using high speed drill during ear surgery as this may cause structural and functional damage to the inner ear. Spontaneous recovery could be occurs after acoustic trauma but incomplete recovery with permanent scar formation in outer hair cells may occur.
VL  - 2
IS  - 5
ER  -

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