Respiratory Therapy Formulas and Calculations

2) P(A-a)O 2 = PAO 2 – PaO 2 Alveolar Oxygen Tension (PAO 2) PAO 2 = (P B – P H2O) x FiO 2 – (PaCO 2 / 0.8) Arterial/Alveolar Oxygen Tension (a/A) Ratio (a/A) Ratio = PaO 2/PAO 2 Arterial Oxygen Content (CaO 2) CaO 2 = (Hb x 1.34 x SaO 2) + (PaO 2 x 0.003) End-Capillary Oxygen Content (CcO 2) Respiratory Therapy Formulas ................
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