How long does it take for a pulse oximeter to read accurately?
脉搏血氧计需要多长时间才能准确读数？
It generally takes between 5 to 10 seconds for a pulse oximeter to provide a reading, though it can take up to a minute in some cases if peripheral circulation is poor.
脉搏血氧计通常需要 5 到 10 秒才能提供读数，但在某些情况下，如果末梢循环不良，可能需要长达一分钟的时间。