The SpO₂/FiO₂ ratio has been proposed as an alternative hypoxemia criterion for diagnosing ARDS, particularly in resource-limited settings where arterial blood gas (ABG) analysis is not readily ...

At an FiO2 of 0.30, a pulse oximeter attached to the right index finger or a 6-week-old neonate displays an SaO2 of 87% and a pulse of 64/min. A heart monitor reads a simultaneous heart rate of ...