Dawson Jennifer A, Owen Louise S, Middleburgh Robin, Davis Peter G
The Royal Women's Hospital, Melbourne, Victoria, Australia; Murdoch Childrens Research Institute, Melbourne, Victoria, Australia; The University of Melbourne, Melbourne, Victoria, Australia.
J Paediatr Child Health. 2014 Jan;50(1):24-6. doi: 10.1111/jpc.12393. Epub 2013 Oct 6.
The gases used to stabilise infants during resuscitation are usually unconditioned air and oxygen, often described as 'cold and dry', in comparison with the heated, humidified gases used for ongoing ventilation in neonatal intensive care units. The aim of this study was to determine exactly how 'cold and dry' these unconditioned gases are.
Multiple measurements of temperature and relative humidity (RH) of piped gases were recorded at different sites, and at different times of day, across The Royal Women's Hospital, Melbourne. Ambient temperature and relative humidities were also recorded.
Eighty paired air and oxygen measurements of temperature and RH were recorded. Mean temperatures of piped oxygen and air were 23.3 (0.9) and 23.4 (0.9) °C respectively. Mean RH of piped air was 5.4 (0.7) %; piped oxygen was significantly drier, mean RH 2.1 (1.1) %.
Piped gases were delivered at room temperature and were extremely dry. This highlights the importance of research assessing the practicality of heating and humidifying resuscitation gases, and assessing the impact of their use on clinically important neonatal outcomes.
与新生儿重症监护病房中用于持续通气的加热、加湿气体相比，复苏期间用于稳定婴儿的气体通常是未经处理的空气和氧气，常被描述为“寒冷且干燥”。本研究的目的是确切确定这些未经处理的气体有多“寒冷且干燥”。
在墨尔本皇家妇女医院的不同地点和一天中的不同时间，对管道气体的温度和相对湿度（RH）进行了多次测量。还记录了环境温度和相对湿度。
记录了80对空气和氧气的温度及RH测量值。管道氧气和空气的平均温度分别为23.3（0.9）和23.4（0.9）°C。管道空气的平均RH为5.4（0.7）%；管道氧气明显更干燥，平均RH为2.1（1.1）%。
管道气体在室温下输送且极其干燥。这突出了研究评估加热和加湿复苏气体的实用性以及评估其使用对临床上重要的新生儿结局的影响的重要性。
