Hi I would like to know the difference between documented SPO2 readings and SPO2-HR readings.  If a patient is on BiPAP, O2 sat is 94% records list O2% is 50...not sure what this represents. Please advise. Also I know that each case is individual but what would be the deciding factor to switch a patient from BiPAP to ventilation? thanks for your assistance.Connie Belculfine, RN
HR mean heart rate, SPo2 mean oxygen saturation.  It means 94% sp02 on FiO2 of 50% (giving 50% oxygen) on room AOR, we have 21% oxygen. I hope this clears your doubt. If patient is becoming Chat Doctor.