TABLE 1
Thoracic pressure readings
| Pressures at a location |
| Pao (airway opening pressure) |
| Palv (alveolar pressure) |
| Ppl (pleural pressure) |
| Pab (abdominal pressure) |
| Pbs (body surface pressure) |
| Pressure differences across structures |
| Pel(L) (elastic recoil pressure of the lung (pressure across lung tissue)) |
| PL (transpulmonary pressure) |
| Prc (pressure across the rib cage) |
| Paw (flow-resistive pressure in airways) |
| Pcw (pressure across the chest wall) |
| Pdi (transdiaphragmatic pressure) |
| Prs (transrespiratory system pressure) |
| Pabw (transabdominal wall pressure) |
| Peq (pressure across the equipment) |
| Relationship among pressures |
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