Your patient is on High Flow oxygen via a gas blender (ie Airvo2). What wall-oxygen rate will deliver the same amount of oxygen to the patient? Oxygen Equivalence Calculator FiO₂: 21% High Flow Rate: 1 L/min Equivalent Wall Oxygen Flow Rate: 0.0 L/min Estimated maximum PEEP deliverable with closed-mouth: 1 L/min: 0.1 cmH2O Sharma S, […]
Read More »The Berggren Equation, also known as the shunt equation. Berggren Equation Shunt Fraction Qs/Qt = (CcO₂ − CaO₂) / (CcO₂ − CvO₂) Inputs Units mmHg kPa CcO₂ [PAO₂] Calculate mmHg CaO₂ [PaO₂] mmHg CvO₂ [ScvO₂ surrogate] mmHg Alveolar Gas Calculation (PAO₂) Assume sea-level: PB=760 mmHg (101.3 kPa), PH₂O=47 mmHg (6.3 kPa), RQ=0.8 FiO₂ (%) % PaCO₂ (mmHg) Equation PAO₂ […]
Read More »A-a Gradient Calculator | criticalcare.info A-a Gradient Calculator PAO2 = (713 × FiO2) − (1.25 × PaCO2) A-a Gradient = PAO2 − PaO2 FiO2: 0.21 (fraction) PaCO2: 40 mm Hg PaO2: 90 mm Hg
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