Table 5 Comparison of tidal volumes before and after administration of neuromuscular blocking drugs in patients who were initially graded as difficult face mask ventilation
| Ā | N | Before | After | Mean difference (95 % CI) | p-value* |
|---|---|---|---|---|---|
Han score ā„3 | 32 | 350 (170) | 430 (200) | 77 (26, 130) | 0.004 |
Warters score ā„4 | 119 | 320 (130) | 370 (130) | 46 (26, 70) | <0.001 |
Vtā<ā4 ml.kgā1 PBW or <150 ml | 39 | 170 (74) | 290 (120) | 110 (69, 150) | <0.001 |