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不同新生儿呼吸辅助模式中的温度和湿度:四个加热加湿器的体外表现
Emanuela Zannin1, Camilla Rigotti1, Stefano Robbiani2
1Neonatal Intensive Care Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.
新生儿加热加湿器显示可变的温度和湿度输出. 气体流量显著影响性能,较低的流量为早产婴儿提供了不充分的条件,需要呼吸支持.
科学领域:
- 新生儿呼吸系统护理新生儿呼吸系统护理
- 医疗器械工程 医疗器械工程
- 温度调节和加湿方式
背景情况:
- 灵气气体的最佳加热和加湿对于处于呼吸器辅助的早产婴儿至关重要.
- 新生儿加热加湿器之间的性能变化可能会影响患者的治疗结果.
研究的目的:
- 为了比较不同新生儿加热加湿器的温度 (T) 和绝对湿度 (AH).
- 为了评估各种呼吸支模式和设置的性能.
主要方法:
- 四个新生儿加热加湿器在化器中使用新生儿试验肺进行了测试.
- 用不同的气体流速和通风模式 (传统和高频振荡) 进行测量.
- 用于测量T和相对湿度的热湿度计,计算测试肺附近的AH.
主要成果:
- 在加湿器和设置之间观察到T和AH的显著变化.
- 偏差流量是主要决定因素;较高的流量增加了T和AH.
- MR950加湿器未能达到适当的T (<36.7°C) 和AH (<37g/m3),特别是在流量<5L/分钟时.
- 海德拉蒂斯9500neo和MR850通常实现了更高的AH (>44g/m3).
结论:
- 加热加湿器的性能,特别是T和AH,随设备和气体流量而有很大变化.
- 需要进行临床研究来确定这种变异性对患者结果的影响.
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