Use of a Nasal Cannula as a Preoxygenation Adjunct: A Randomized Crossover Study.

IF 1.6 Q2 ANESTHESIOLOGY Anesthesiology Research and Practice Pub Date : 2024-09-05 eCollection Date: 2024-01-01 DOI:10.1155/2024/7873142
Murphy Joel, Suvajit Podder, Savan Kumar Nagesh, Ramyatha Aithal, Aditya R Devalla, Shaji Mathew
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Abstract

Background: Preoxygenation prior to induction of general anesthesia is intended to increase the oxygen reserve in the lungs. This technique delays the onset of hypoxemia during the placement of the tracheal tube.

Objective: To observe the benefits of oxygen through nasal cannula when used as an adjunct during preoxygenation.

Methods: We enrolled 30 healthy volunteers and conducted a sequence of six preoxygenation tests. These included 3-minute tidal volume breathing and 8 vital capacity breaths, with and without oxygen flowing through the nasal cannula as an adjunct. Subjects were kept at a supine position with a face mask on their faces. Their baseline vitals were measured and end-tidal O2 (ETO2) was recorded at the end of each test. The comfort of each technique was also assessed.

Results: When comparing the efficacy of the two preoxygenation methods, we found that the addition of oxygen through the nasal cannula improved the efficacy of preoxygenation with both the 3-minute tidal volume breathing method and the 8 vital capacity method (p < 0.001). The three-minute tidal volume breathing technique had higher end-tidal oxygen when compared to the eight vital capacity breaths.

Conclusions: The administration of oxygen through a nasal cannula during preoxygenation improves the efficacy of preoxygenation in healthy volunteers. Tidal volume breathing for three minutes achieves a higher end-tidal oxygen concentration compared to eight vital capacity breaths over one minute.

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使用鼻导管作为预吸氧辅助工具:一项随机交叉研究。
背景:全身麻醉诱导前的预吸氧旨在增加肺部的氧气储备。这项技术可延迟气管插管过程中低氧血症的发生:观察在预吸氧过程中通过鼻导管辅助吸氧的益处:方法:我们招募了 30 名健康志愿者,并进行了 6 次预吸氧测试。这些测试包括 3 分钟潮气量呼吸和 8 次生命容量呼吸,分别使用和不使用鼻导管辅助供氧。受试者保持仰卧姿势,脸上戴着面罩。测量受试者的基线生命体征,并在每次测试结束时记录潮气末氧气(ETO2)。此外,还对每种技术的舒适度进行了评估:结果:在比较两种预吸氧方法的效果时,我们发现通过鼻插管添加氧气提高了 3 分钟潮气量呼吸法和 8 生命容量法的预吸氧效果(p < 0.001)。与八次生命容量呼吸法相比,三分钟潮气量呼吸法的潮气末氧量更高:结论:在预吸氧过程中通过鼻插管给氧可提高健康志愿者预吸氧的效果。与一分钟内八次生命容量呼吸相比,三分钟潮气量呼吸可获得更高的潮气末氧浓度。
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
CiteScore
3.10
自引率
0.00%
发文量
29
审稿时长
18 weeks
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