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Effects of laryngoscope handle light source on the light intensity from disposable laryngoscope blades
Author(s) -
Milne A. D.,
Brousseau P. A.,
Brousseau C. A.
Publication year - 2014
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/anae.12790
Subject(s) - medicine , light source , light intensity , intensity (physics) , biomedical engineering , optics , physics
Summary A bench‐top study was performed to assess the effects of different laryngoscope handles on the light intensity delivered from disposable metal or plastic laryngoscope blades. The light intensity from both the handle light sources themselves and the combined handle and laryngoscope blade sets was measured using a custom‐designed testing system and light meter. Five samples of each disposable blade type were tested and compared with a standard re‐usable stainless steel blade using three different handle/light sources (Vital Signs LED , Heine 2.5 V Xenon and 3.5 V Xenon). The light intensity delivered by the disposable blades ranged from 790 to 3846 lux for the different handle types. Overall, the 3.5 V Heine handle delivered the highest light output (p < 0.007) in comparison with the other handles. For the disposable blades, the overall light output was significantly higher from the plastic than the metal blades (p < 0.001).