SpO₂/FiO₂ Ratio Calculator

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SpO₂/FiO₂ Ratio
Clinical Decision Tool

Calculates the peripheral oxygen saturation to inspired oxygen fraction ratio.

Oxygen Saturation Peripheral oxygen saturation measured by pulse oximetry. Accepted units % Used by SpO₂/FiO₂ Ratio Clinical note Accuracy decreases with poor perfusion, motion, dyshemoglobinaemia and some devices. Reference Rice TW et al. Chest. 2007;132:410–417. Learn more →
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