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Arterial blood gas patterns in respiratory failure
| pH | PaO2 | PaCO2 | Bicarbonate | |
|---|---|---|---|---|
| Type 1 RF | Normal/high | Low | Normal/low | Normal |
| Acute type 2 RF | Normal/low | Low | High | Normal/rising |
| Acute on chronic type 2 RF | Normal/low | Low | High | Raised |
Abbreviation: RF, respiratory failure.
