Part 6 · Respiratory Physiology
Same concept, other depth: Foundation →
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| Type | Failure | PaO₂ | CaO₂ | Extraction (CaO₂ − CvO₂) | SvO₂ |
|---|---|---|---|---|---|
| Hypoxaemic | loading (lungs, altitude) | ↓ | ↓ | normal/↑ | ↓ |
| Anaemic / dyshaemoglobin | Hb amount or function (anaemia, CO, MetHb) | normal | ↓ | normal | ↓ |
| Stagnant (circulatory) | flow (shock, HF, arterial occlusion) | normal | normal | ↑ | ↓ |
| Histotoxic | cellular use (cyanide, H₂S, severe sepsis) | normal | normal | ↓ | ↑ |
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