What is the effect of pure carbon monoxide poisoning on standard non-co-oximeter arterial oxygen variables?

  1. Low SpO2, low PaO2, normal SaO2
  2. Low SpO2, normal PaO2, low SaO2
  3. Normal SpO2, low PaO2, normal SaO2
  4. Normal SpO2, normal PaO2, normal SaO2