高海拔地区脉搏血氧饱和度的参考值。
Reference values for pulse oximetry at high altitude.
作者信息
Gamponia M J, Babaali H, Yugar F, Gilman R H
机构信息
University of Iowa Hospitals and Clinics, Department of Family Medicine, Iowa City 52242, USA.
出版信息
Arch Dis Child. 1998 May;78(5):461-5. doi: 10.1136/adc.78.5.461.
OBJECTIVE
To determine reference values for oxygen saturation (Sao2) in healthy children younger than 5 years living at high altitude.
DESIGN
One hundred and sixty eight children were examined for Sao2 at 4018 m during well child visits. Physiological state was also noted during the examination.
RESULTS
The mean Sao2 was 87.3% (95% confidence intervals (CI) 86.7%, 87.9%) with a median value of 87.7%. A significant difference was observed in Sao2 between children younger than 1 year compared with older children, although the difference was no longer demonstrable when sleeping children were excluded.
CONCLUSIONS
This study has provided a reference range of Sao2 values for healthy children under 5 years old so that pulse oximetry may be used as an adjunct in diagnosing acute respiratory infections. Younger children were also shown to have a lower mean Sao2 than older children living at high altitude, which suggests physiological adaptation to high altitude over time. In addition, sleep had a lowering effect on Sao2, although the clinical importance of this remains undetermined.
目的
确定居住在高海拔地区的5岁以下健康儿童的血氧饱和度（Sao2）参考值。
设计
在4018米的高度对168名儿童进行健康检查时检测其Sao2。检查期间还记录了生理状态。
结果
平均Sao2为87.3%（95%置信区间（CI）86.7%，87.9%），中位数为87.7%。1岁以下儿童与大龄儿童的Sao2存在显著差异，但排除睡眠中的儿童后，差异不再明显。
结论
本研究提供了5岁以下健康儿童Sao2值的参考范围，以便脉搏血氧饱和度测定可作为诊断急性呼吸道感染的辅助手段。研究还表明，居住在高海拔地区的年幼儿童平均Sao2低于大龄儿童，这表明随着时间推移，机体对高海拔有生理适应。此外，睡眠会使Sao2降低，但其临床重要性尚不确定。
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