oxygenation1 Word Scramble
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| Question | Answer |
| Oxygen Delivery equals | Blood O2 content x Amount of blood going to the tissue |
| DO2 equation | CaO2 x CO |
| Normal DO2 | 600 - 1000 ml/min |
| CaO2 (Blood O2 content) | (Hg x 1.34 x SaO2)+(PaO2 x 0.003) |
| Factors affecting DO2 in order of importance | CO, Hb, Hb Sat, PaO2 |
| Oxygen Index (OI) normal | DO2/BSA = 500-600 |
| Two methods of VO2 Oxygen consumption assessment | 1) Indirect calorimetry 2) Fick Equation |
| Fick Equation | V02 = (Ca02-CvO2) x CO |
| Normal VO2 Oxygen consumption | 250 ml/min |
| Normal V02/BSA | 3-4 ml/min/kg |
| Fick Equation Limitation | requires PA catheter and artline affected by measurement error: thermodilution CO, hb measurement, Sat measurement |
| O2ER is | Oxygen balance comparing O2 transport vs O2 consumption |
| O2ER | V02/D02 |
| O2ER | (Ca02-Cv02)/Ca02 |
| O2ER 40% range | suggest disturbances in cellular oxygenation |
| SvO2 / mixed venous saturation | estimate of adequancy of balance between O2 transport and O2 consumption |
| PAO2 Alveolar equation | [(PB-PH20)x FiO2)] - (PaCO2/0.8) |
| P(A-a)gradient | PAO2 - PaO2 |
| Alveolar Ventilation (VA) | (Vt-VD) x RR OR VE - VD (deadspace vent.) |
| VD.; deadspace ventilation | VD x RR |
| Deadspace volume | Vt x (PaCO2 - PeCO2)/PaCO2 |
Created by:
clementine