Table 2.
Oropharyngeal leak pressures and ventilation with ProSeal LMA
| Parameter | Neutral | Flexion | Extension | Lateral rotation |
|---|---|---|---|---|
| Oropharyngeal leak pressures (cm H2O) | 28 ± 4.19 | 32 ± 4.11* | 24 ± 4.00# | 28 ± 3.15 |
| Ventilation score (3/2/1/0) | 30/0/0/0 | 29/0/0/1 | 30/0/0/0 | 30/0/0/0 |
| Peak airway pressures (cm H2O) | 16 ± 2.52 | 19 ± 6.09© | 15 ± 2.85® | 16 ± 2.59 |
| Expiratory tidal volume (mL) | 461 ± 68.72 | 452 ± 100.75 | 457 ± 66 | 463 ± 66.26 |
| LAW-PAW | 11 ± 5.02 | 12 ± 6.83 | 9 ± 5.18¥ | 12 ± 4.27 |
| EtCO2 (mm Hg) | 31 ± 2.33 | 31 ± 1.98 | 31 ± 2.24 | 31 ± 2.06 |
Data shown are mean ± SD or numbers. P value is in comparison with the neutral position.
* P < 0.001 between neutral and flexion, # P < 0.001 between neutral and extension.
© P = 0.02 between neutral and flexion, ® P = 0.04 between neutral and extension.
¥ P < 0.001 between neutral and extension.