(b) Initial cuff pressure 20 cmH2O
| Flexion | Extension | Rotation | |
|---|---|---|---|
| HVLP | 8.4 [7.6–9.4] | 4.7 [3.9–5.4] | 0.4 [−0.4–1.2] |
| Taper | 5.4 [4.0–6.5] | 0.9 [0.4–1.8] | −0.6 [−1.5–0.4] |
| P value | <0.001∗ | <0.001∗ | 0.12 |
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