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Resp001 Oxygen Trans
Oxygen Transport
| Question | Answer |
|---|---|
| ONLY WAYS IN WHICH OXYGEN IS FOUND IN BLOOD? | Dissolved in blood (slowest), Bound to Hemoglobin (fastest). |
| What determines the amount of O2 that dissolves in blood plasma? | alveolar PO2 |
| hemoglobin (Hb) | majority of O2 in blood is bound to _____. Without Hb, blood cannot carry enough O2 to meet tissue requirements. |
| Normal PaO2? | 80-100mmHg |
| Oxyhemoglobin | state of hemoglobin that is bound to oxygen |
| Deoxyhemoglobin | state of hemoglobin NOT bound to oxygen |
| Bus and Passenger | Hb is essentially the bus and O2 is essentially passenger |
| PaO2 | Partial Pressure of Oxygen in the ARTERY |
| SaO2 | Hemoglobin saturation percentage in ARTERY |
| CaO2 | content of oxygen within ARTERY CaO2 = (0.003)(PaO2) + (1.34)(Hb)(SaO2) |
| SpO2 | non invasive way of measuring Hb saturation May not be completley accurate, depends on patient’s pathology |
| Hypoxemia | low levels of O2 in the blood |
| Hypoxia | Low levels of oxygen at TISSUE LEVEL No set numerical value to determine normal Usually assessed by patient’s presentation Confused? Alert/Awake/Oriented Tissue color (Cyanosis present?) Specific pathologies |
| ARDS | Acute respiratory distress syndrome |
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