近红外光谱技术（NIRS）是目前唯一应用于临床的无创脑氧饱和度监测技术，在临床上应用广泛。本文叙述近年来脑氧饱和度在临床实践中的应用及进展。NIRS技术用于脑氧饱和度监测的基本原理，正常值，临床意义，临床应用，影响因素局限性以及临床应用前景等。

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