Background: It is well known that oxygen saturation as measured by pulse oximetry (SpO₂) decreases as altitude increases. However, how SpO₂ changes across childhood, and more specifically during sleep/wake states, at different high altitudes are less well understood. We aimed to perform a systematic review of all studies with direct SpO₂ measurement in healthy children living at high altitude (>2500 meters above sea level) to address these questions.

中文翻译：

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高海拔儿童期的氧饱和度：系统评价。

背景技术：众所周知，通过脉搏血氧饱和度（SpO ₂）测量的氧饱和度会随着海拔的升高而降低。然而，对于SpO ₂在整个儿童时期，尤其是在睡眠/苏醒状态下，在不同的高海拔，如何发生变化的了解较少。我们旨在对生活在高海拔（海拔> 2500米）的健康儿童中直接测量SpO ₂的所有研究进行系统评价，以解决这些问题。