高流量鼻氧合作为足月孕妇预氧技术的评价

IF 0.2 Q4 ANESTHESIOLOGY
P. Ajeetha, N. Kachru, N. Saraswat
{"title":"高流量鼻氧合作为足月孕妇预氧技术的评价","authors":"P. Ajeetha, N. Kachru, N. Saraswat","doi":"10.4103/JOACC.JOACC_24_22","DOIUrl":null,"url":null,"abstract":"Background and Aims: Obstetric airway guidelines recommend preoxygenation before the induction of general anesthesia to achieve an end tidal oxygen concentration of ≥90%. Recently, high flow nasal oxygenation (HFNO) has been evaluated as a technique for delivering a high concentration of oxygen using high flow rates to patients. We evaluated the use of HFNO as a technique for preoxygenation in full-term pregnant women. Methods: A cross-sectional observational study was conducted on 100 term pregnant women. They underwent preoxygenation using HFNO for 4 minutes (30 L/min for 30 secs followed by 50 L/min for 210 secs) and end tidal oxygen concentration (ETO2) was measured at the end of preoxygenation. The primary outcome was the percentage of women who achieved an expired oxygen concentration of ≥90% for the first expired breath. The secondary outcome was the acceptability and comfort of HFNO as compared to facemask preoxygenation using a 4-point Likert scale. Results: The percentage of women who achieved expired oxygen concentration of ≥90% after 4 minutes of HFNO preoxygenation was 32% [95% confidence interval (CI):22.7-41.3%] with the mean end tidal oxygen (SD) being 86.67 (3.4). 71% [mean (SD): 2.94 (0.92)] found nasal cannula and 56% [mean (SD): 2.67 (1.21)] found facemask comfortable and acceptable for preoxygenation (P value, 0.05). Conclusion: Although HFNO is a comfortable technique, when used for preoxygenation for 4 minutes, it did not achieve an acceptable level of preoxygenation (ETO2 ≥90% in 95% of individuals). Therefore, it is an inadequate technique for preoxygenation in term pregnant women.","PeriodicalId":16611,"journal":{"name":"Journal of Obstetric Anaesthesia and Critical Care","volume":null,"pages":null},"PeriodicalIF":0.2000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluation of high flow nasal oxygenation as a technique for preoxygenation in full term pregnant women\",\"authors\":\"P. Ajeetha, N. Kachru, N. Saraswat\",\"doi\":\"10.4103/JOACC.JOACC_24_22\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Background and Aims: Obstetric airway guidelines recommend preoxygenation before the induction of general anesthesia to achieve an end tidal oxygen concentration of ≥90%. Recently, high flow nasal oxygenation (HFNO) has been evaluated as a technique for delivering a high concentration of oxygen using high flow rates to patients. We evaluated the use of HFNO as a technique for preoxygenation in full-term pregnant women. Methods: A cross-sectional observational study was conducted on 100 term pregnant women. They underwent preoxygenation using HFNO for 4 minutes (30 L/min for 30 secs followed by 50 L/min for 210 secs) and end tidal oxygen concentration (ETO2) was measured at the end of preoxygenation. The primary outcome was the percentage of women who achieved an expired oxygen concentration of ≥90% for the first expired breath. The secondary outcome was the acceptability and comfort of HFNO as compared to facemask preoxygenation using a 4-point Likert scale. Results: The percentage of women who achieved expired oxygen concentration of ≥90% after 4 minutes of HFNO preoxygenation was 32% [95% confidence interval (CI):22.7-41.3%] with the mean end tidal oxygen (SD) being 86.67 (3.4). 71% [mean (SD): 2.94 (0.92)] found nasal cannula and 56% [mean (SD): 2.67 (1.21)] found facemask comfortable and acceptable for preoxygenation (P value, 0.05). Conclusion: Although HFNO is a comfortable technique, when used for preoxygenation for 4 minutes, it did not achieve an acceptable level of preoxygenation (ETO2 ≥90% in 95% of individuals). Therefore, it is an inadequate technique for preoxygenation in term pregnant women.\",\"PeriodicalId\":16611,\"journal\":{\"name\":\"Journal of Obstetric Anaesthesia and Critical Care\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.2000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Obstetric Anaesthesia and Critical Care\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/JOACC.JOACC_24_22\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ANESTHESIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Obstetric Anaesthesia and Critical Care","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/JOACC.JOACC_24_22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ANESTHESIOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

背景和目的:产科气道指南建议在全身麻醉诱导前进行预氧,以达到潮末氧浓度≥90%。最近,高流量鼻氧合(HFNO)已被评估为一种使用高流速向患者输送高浓度氧气的技术。我们评估了HFNO作为一种技术在足月孕妇中的应用。方法:对100例足月妊娠妇女进行横断面观察性研究。他们使用HFNO进行4分钟的预氧(30L/min,30秒,然后50L/min,210秒),并在预氧结束时测量潮气末氧浓度(ETO2)。主要结果是女性在第一次呼气中达到≥90%的呼气氧浓度的百分比。次要结果是与使用4点Likert量表的面罩预氧相比,HFNO的可接受性和舒适性。结果:HFNO预氧4分钟后达到过期氧浓度≥90%的女性比例为32%[95%置信区间(CI):22.74-1.3%],平均潮气末氧量(SD)为86.67(3.4)。71%[平均值(SD):2.94(0.92)]发现有鼻插管,56%[平均值:2.67(1.21)]发现面罩舒适且可接受预氧(P值,0.05)。结论:尽管HFNO是一种舒适的技术,但当用于预氧4分钟时,它没有达到可接受的预氧水平(95%的人的ETO2≥90%)。因此,对于足月妊娠妇女来说,这是一种不充分的预氧技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of high flow nasal oxygenation as a technique for preoxygenation in full term pregnant women
Background and Aims: Obstetric airway guidelines recommend preoxygenation before the induction of general anesthesia to achieve an end tidal oxygen concentration of ≥90%. Recently, high flow nasal oxygenation (HFNO) has been evaluated as a technique for delivering a high concentration of oxygen using high flow rates to patients. We evaluated the use of HFNO as a technique for preoxygenation in full-term pregnant women. Methods: A cross-sectional observational study was conducted on 100 term pregnant women. They underwent preoxygenation using HFNO for 4 minutes (30 L/min for 30 secs followed by 50 L/min for 210 secs) and end tidal oxygen concentration (ETO2) was measured at the end of preoxygenation. The primary outcome was the percentage of women who achieved an expired oxygen concentration of ≥90% for the first expired breath. The secondary outcome was the acceptability and comfort of HFNO as compared to facemask preoxygenation using a 4-point Likert scale. Results: The percentage of women who achieved expired oxygen concentration of ≥90% after 4 minutes of HFNO preoxygenation was 32% [95% confidence interval (CI):22.7-41.3%] with the mean end tidal oxygen (SD) being 86.67 (3.4). 71% [mean (SD): 2.94 (0.92)] found nasal cannula and 56% [mean (SD): 2.67 (1.21)] found facemask comfortable and acceptable for preoxygenation (P value, 0.05). Conclusion: Although HFNO is a comfortable technique, when used for preoxygenation for 4 minutes, it did not achieve an acceptable level of preoxygenation (ETO2 ≥90% in 95% of individuals). Therefore, it is an inadequate technique for preoxygenation in term pregnant women.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
37
审稿时长
29 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信