使用不同输送装置、流速和装置位置进行氧气吹拂的效果。

The efficacy of oxygen wafting using different delivery devices, flow rates and device positioning.

作者信息

Blake Denise F, Shih Elizabeth M, Mateos Paul, Brown Lawrence H

机构信息

Emergency Department, The Townsville Hospital, Townsville, Queensland 4810, Australia; School of Marine and Tropical Biology, James Cook University, Townsville, Queensland 4814, Australia.

University of Toronto, Toronto, Ontario, Canada.

出版信息

Australas Emerg Nurs J. 2014 Aug;17(3):119-25. doi: 10.1016/j.aenj.2014.05.002. Epub 2014 Jul 22.

DOI:10.1016/j.aenj.2014.05.002

PMID:25066645

Abstract

BACKGROUND

Oxygen "wafting" provides a non-contact oxygen alternative for uncooperative paediatric patients in the emergency department (ED). The aim of this study was to identify the combination of oxygen delivery device, flow rate and device positioning that delivers the highest concentration of wafted oxygen.

METHODS

ED nursing staff were surveyed to determine current oxygen wafting practice. A simulated patient and oxygen sensor were used to compare wafted oxygen concentrations for six delivery devices in various positions and oxygen flow rates.

RESULTS

Only oxygen tubing and the paediatric non-rebreather mask consistently delivered wafted oxygen concentrations above 30%. The paediatric non-rebreather held below the face produced concentrations ranging from 26.1% (10 cm) to 39.8% (5 cm). At 15 L/min, tubing held in front of the face produced concentrations ranging from 31.2% (15 cm) to 56.7% (5 cm); reducing the flow rate to 6-8 L/min had no meaningful effect on the delivered oxygen concentration. When tubing was used below the face, flow rates between 6 and 8 L/min produced somewhat higher concentrations than 15 L/min (5 cm: 36.3% vs. 30.9%).

CONCLUSIONS

When delivering oxygen by wafting, the highest oxygen concentrations are achieved when positioning tubing 5-15 cm in front of the face or positioning tubing or a paediatric non-rebreather mask 5-10 cm below the face at 10-15 L/min flow. This should be considered when using oxygen wafting in the ED.

摘要

背景

氧气“吹拂”为急诊科不配合的儿科患者提供了一种非接触式输氧方式。本研究的目的是确定能输送最高浓度吹拂氧气的输氧设备、流速和设备位置的组合。

方法

对急诊科护理人员进行调查以确定当前的氧气吹拂操作。使用模拟患者和氧气传感器比较六种输氧设备在不同位置和氧气流速下的吹拂氧气浓度。

结果

只有氧气管和儿科非重复呼吸面罩能持续输送浓度高于30%的吹拂氧气。将儿科非重复呼吸面罩置于面部下方时，产生的浓度范围为26.1%（10厘米）至39.8%（5厘米）。在15升/分钟时，将氧气管置于面部前方产生的浓度范围为31.2%（15厘米）至56.7%（5厘米）；将流速降至6 - 8升/分钟对输送的氧气浓度没有显著影响。当氧气管置于面部下方时，6至8升/分钟的流速产生的浓度略高于15升/分钟（5厘米：36.3%对30.9%）。