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Temperature and luminosity outputs of endoscopes used in transcanal endoscopic ear surgery: an experimental study

Published online by Cambridge University Press:  29 April 2022

T D Milner ,
M Jaffer Open the ORCID record for M Jaffer [Opens in a new window]  and
A Iyer
T D Milner*
Affiliation:
Department of Otolaryngology, University Hospital Monklands, NHS Lanarkshire, Airdrie, Scotland, UK
M Jaffer
Affiliation:
Department of Otolaryngology, University Hospital Monklands, NHS Lanarkshire, Airdrie, Scotland, UK
A Iyer
Affiliation:
Department of Otolaryngology, University Hospital Monklands, NHS Lanarkshire, Airdrie, Scotland, UK
*
Author for correspondence: Mr Thomas Daniel Milner, Department of Otolaryngology, University Hospital Monklands, Airdrie ML6 0JS, Scotland, UK E-mail: tommilner1@doctors.org.uk
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Abstract

Objective

To establish the relationship between endoscope temperatures and luminosity with a variety of light source types, endoscope ages, endoscope sizes, angles and operative distance in transcanal endoscopic ear surgery.

Methods

Transcanal endoscopic ear surgery was simulated in an operating theatre using 7 mm plastic suction tubing coated in insulating tape. An ATP ET-959 thermometer was used to record temperatures, and a Trotec BF06 lux meter was used to measure luminosity. Luminosity and temperature recordings were taken at 0 mm and 5 mm from the endoscope tip.

Results

Thermal energy transfer from operating endoscopes is greatest when: the light intensity is high, there is a light-emitting diode light source and the endoscope is touching the surface. Additionally, larger-diameter endoscopes, angled endoscopes and new endoscopes generated greater heat.

Conclusion

It is recommended that operative light intensity is maintained at the lowest level possible, and that the surgeon avoids contact between patient tissues and the endoscope tip.

Keywords

EndoscopesTemperatureOtologyMiddle Ear
Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 137 , Issue 4 , April 2023 , pp. 368 - 372
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of J.L.O. (1984) LIMITED

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Footnotes

Mr T D Milner takes responsibility for the integrity of the content of the paper

Presented at the ENT Scotland Winter Meeting, 8 November 2019, Stirling, Scotland, UK, and at the British Academy Conference in Otolaryngology (BACO), 10–12 January 2021 (virtual conference).

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