The best replacement for sao2 is spo2.

The best alternatives to sao2 are rated as following:
★★★★★  spo2
★★★★  pao2
★★  fio2
  po2

Your alternative for sao2 is not listed? Suggest!
Speaking about sao2, one probably shouldn't forget about low pao2.

Other search terms related to sao2 and their ratings are:
★★★★★ low pao2
You have in mind a companion for sao2 and it is not yet here? Propose!



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