Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study

Background and Aims: Insufficient illumination of the oral cavity during endotracheal intubation may result in suboptimal conditions. Consequently, suboptimal illumination and laryngoscopy may lead to potential unwanted trauma to soft tissues of the pharyngeal mucosa. We investigated illumination of...

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Main Authors: Barbe MA Pieters, Andre AJ van Zundert
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2016-01-01
Series:Indian Journal of Anaesthesia
Subjects:
Online Access:http://www.ijaweb.org/article.asp?issn=0019-5049;year=2016;volume=60;issue=5;spage=325;epage=329;aulast=Pieters
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author Barbe MA Pieters
Andre AJ van Zundert
author_facet Barbe MA Pieters
Andre AJ van Zundert
author_sort Barbe MA Pieters
collection DOAJ
description Background and Aims: Insufficient illumination of the oral cavity during endotracheal intubation may result in suboptimal conditions. Consequently, suboptimal illumination and laryngoscopy may lead to potential unwanted trauma to soft tissues of the pharyngeal mucosa. We investigated illumination of the oral cavity by different videolaryngoscopes (VLS) in a manikin model. Methods: We measured light intensity from the mouth opening of a Laerdal intubation trainer comparing different direct and indirect VLS at three occasions, resembling optimal to less-than-optimal intubation conditions; at the photographer′s dark room, in an operating theatre and outdoors in bright sunlight. Results: Substantial differences in luminance were detected between VLS. The use of LED light significantly improved light production. All VLS produced substantial higher luminance values in a well-luminated environment compared to the dark photographer′s room. The experiments outside-in bright sunlight-were interfered with by direct sunlight penetration through the synthetic material of the manikin, making correct measurement of luminance in the oropharynx invalid. Conclusion: Illumination of the oral cavity differs widely among direct and indirect VLS. The clinician should be aware of the possibility of suboptimal illumination of the oral cavity and the potential risk this poses for the patient.
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spelling doaj.art-7cbaedb3405549069f9ec35df6a89dfc2022-12-22T03:32:43ZengWolters Kluwer Medknow PublicationsIndian Journal of Anaesthesia0019-50492016-01-0160532532910.4103/0019-5049.181593Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin studyBarbe MA PietersAndre AJ van ZundertBackground and Aims: Insufficient illumination of the oral cavity during endotracheal intubation may result in suboptimal conditions. Consequently, suboptimal illumination and laryngoscopy may lead to potential unwanted trauma to soft tissues of the pharyngeal mucosa. We investigated illumination of the oral cavity by different videolaryngoscopes (VLS) in a manikin model. Methods: We measured light intensity from the mouth opening of a Laerdal intubation trainer comparing different direct and indirect VLS at three occasions, resembling optimal to less-than-optimal intubation conditions; at the photographer′s dark room, in an operating theatre and outdoors in bright sunlight. Results: Substantial differences in luminance were detected between VLS. The use of LED light significantly improved light production. All VLS produced substantial higher luminance values in a well-luminated environment compared to the dark photographer′s room. The experiments outside-in bright sunlight-were interfered with by direct sunlight penetration through the synthetic material of the manikin, making correct measurement of luminance in the oropharynx invalid. Conclusion: Illumination of the oral cavity differs widely among direct and indirect VLS. The clinician should be aware of the possibility of suboptimal illumination of the oral cavity and the potential risk this poses for the patient.http://www.ijaweb.org/article.asp?issn=0019-5049;year=2016;volume=60;issue=5;spage=325;epage=329;aulast=PietersAirwayanaesthetic techniques-laryngoscopyequipment-laryngoscopesintubation
spellingShingle Barbe MA Pieters
Andre AJ van Zundert
Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
Indian Journal of Anaesthesia
Airway
anaesthetic techniques-laryngoscopy
equipment-laryngoscopes
intubation
title Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
title_full Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
title_fullStr Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
title_full_unstemmed Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
title_short Videolaryngoscopes differ substantially in illumination of the oral cavity: A manikin study
title_sort videolaryngoscopes differ substantially in illumination of the oral cavity a manikin study
topic Airway
anaesthetic techniques-laryngoscopy
equipment-laryngoscopes
intubation
url http://www.ijaweb.org/article.asp?issn=0019-5049;year=2016;volume=60;issue=5;spage=325;epage=329;aulast=Pieters
work_keys_str_mv AT barbemapieters videolaryngoscopesdiffersubstantiallyinilluminationoftheoralcavityamanikinstudy
AT andreajvanzundert videolaryngoscopesdiffersubstantiallyinilluminationoftheoralcavityamanikinstudy