Visibility of video laryngoscope in high-illuminance environment simulating outdoor conditions: effects of screen conditions and polarized sunglasses.

IF 0.8 Q3 ANESTHESIOLOGY

JA Clinical Reports Pub Date : 2025-03-03 DOI:10.1186/s40981-025-00778-9

Takayuki Hasegawa, Rieko Oishi, Hidemi Ishido, Ayumi Oishi, Satoki Inoue

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引用次数: 0

Abstract

Background: Video laryngoscopes generally increase the success rate of tracheal intubation and clinical outcome compared to traditional direct laryngoscopes. However, there is a concern that their effectiveness can be compromised in bright outdoor environments. The impact of polarized sunglasses on the visibility of a video laryngoscope in a high-illumination environment simulating outdoor conditions was assessed. Additionally, the effect of screen smudges on screen visibility was examined.

Methods: A high-illumination environment was created using artificial light equivalent to daylight outdoors. Twenty-four anesthesiologists participated in this study. A commercially available laryngoscope was utilized to evaluate the visibility of the monitor screen and visualize the larynx. The experiment involved a fixed order sequence, including viewing with the naked eye, wearing sunglasses, cleaning the screen without wearing sunglasses, and cleaning the screen while wearing sunglasses, to evaluate visibility with each intervention. A visual analog scale (VAS) (0-100 mm) was used to evaluate the visibility of the larynx displayed on the screen.

Results: Polarized sunglasses significantly enhanced visibility, with a median VAS score of 12 compared to 5 (P = 0.004). Moreover, cleaning the monitor screen significantly improved visibility more than wearing sunglasses alone, with a median VAS score of 38 compared to 12 (P = 0.002). Additionally, wearing sunglasses after cleaning the monitor screen provided even better visibility compared to only cleaning the screen, with a median VAS score of 57 compared to 38 (P = 0.002).

Conclusions: Based on these findings, it is suggested that when using a video laryngoscope outdoors in sunny conditions, the first step to address impaired visibility should be to clean the screen. Wearing sunglasses, if possible, can also be effective in improving visibility.

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模拟室外条件的高照度环境下视频喉镜的可见度：屏幕条件和偏光太阳镜的影响。

背景：与传统的直接喉镜相比，视频喉镜普遍提高了气管插管的成功率和临床效果。然而，人们担心，在明亮的室外环境中，它们的效果会受到影响。在模拟室外条件的高照度环境中，评估了偏光太阳镜对视频喉镜可视性的影响。此外，还研究了屏幕污迹对屏幕可见度的影响。方法：利用相当于室外日光的人造光营造高照度环境。24名麻醉师参与了这项研究。使用市售喉镜评估监控屏幕的可见度并观察喉部。实验采用固定的顺序，包括肉眼观看、戴太阳镜、不戴太阳镜清洁屏幕、戴太阳镜清洁屏幕，评估每种干预的可见度。采用视觉模拟量表（VAS）（0 ~ 100 mm）评价屏幕显示喉部的可见性。结果：偏光太阳镜显著提高了能见度，VAS评分中位数为12分，而VAS评分中位数为5分（P = 0.004）。此外，清洁显示器屏幕比单独佩戴太阳镜更能显着提高能见度，VAS评分中位数为38分，而12分（P = 0.002）。此外，在清洁显示器屏幕后佩戴太阳镜比仅清洁屏幕提供更好的能见度，VAS评分中位数为57比38 （P = 0.002）。结论：基于这些发现，我们建议在户外阳光充足的条件下使用视频喉镜时，解决能见度受损的第一步应该是清洁屏幕。如果可能的话，戴上太阳镜也能有效地提高能见度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

JA Clinical Reports ANESTHESIOLOGY-

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

9 weeks

期刊介绍： JA Clinical Reports is a companion journal to the Journal of Anesthesia (JA), the official journal of the Japanese Society of Anesthesiologists (JSA). This journal is an open access, peer-reviewed, online journal related to clinical anesthesia practices such as anesthesia management, pain management and intensive care. Case reports are very important articles from the viewpoint of education and the cultivation of scientific thinking in the field of anesthesia. However, submissions of anesthesia research and clinical reports from Japan are notably decreasing in major anesthesia journals. Therefore, the JSA has decided to launch a new journal, JA Clinical Reports, to encourage JSA members, particularly junior Japanese anesthesiologists, to publish papers in English language.