Causes of Suboptimal Preoxygenation Before Tracheal Intubation in Elective and Emergency Abdominal Surgery

Q4 Multidisciplinary
Evaldas Kauzonas, Miglė Kalinauskaitė, S. Miškinytė, Silvija Bubulytė, E. Kontrimavičiūtė
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Abstract

Abstract Optimal preoxygenation (PO) prior to tracheal intubation reduces the risk of arterial desaturation and prolongs the period of safe apnoea. The common methods of PO are mask ventilation with 100% O2 for 3–5 minutes or, alternatively, asking the patient to take eight deep breaths in a minute. Our study group conducted a prospective study to assess the impact of the most common risk factors on PO and to compare the efficiency of PO in patients undergoing elective and emergency abdominal surgery without premedication. PO was performed using mask ventilation with 6 l/min of 100% oxygen for 5 minutes. End-tidal oxygen (EtO2) was documented in 30-second increments. We found that optimal PO (EtO2 > 90%) was not achieved by almost half of the patients (46%) and that this was more common in the elective surgery group. Effective PO was not impacted by any of the evaluated risk factors for suboptimal oxygenation. Despite these findings, we believe that the identification of potential risk factors is crucial in the pre-anaesthesia stage, given the benefits of optimal PO.
择期和急诊腹部手术气管插管前预充氧不理想的原因
气管插管前最佳预充氧(PO)可降低动脉去饱和的风险,延长安全呼吸暂停时间。PO的常用方法是100%氧气面罩通气3-5分钟,或者要求患者每分钟深呼吸8次。我们的研究组进行了一项前瞻性研究,以评估最常见的危险因素对PO的影响,并比较在没有预用药的情况下接受选择性和紧急腹部手术的患者PO的效率。PO采用面罩通气,6l /min 100%吸氧,持续5分钟。潮末氧(EtO2)以30秒的增量记录。我们发现,几乎一半的患者(46%)没有达到最佳PO (EtO2 > 90%),这在择期手术组中更为常见。有效PO不受任何评估的亚理想氧合危险因素的影响。尽管有这些发现,我们认为,考虑到最佳PO的好处,在麻醉前阶段识别潜在的危险因素是至关重要的。
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
0.70
自引率
0.00%
发文量
61
审稿时长
20 weeks
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