From: Peak expiratory flow in mechanically ventilated patients under three modalities of manually assisted coughing
Manually assisted coughing
Unilateral
Bilateral
Abdominal–thoracic
Peak expiratory flow (l/s)
0.773 ± 0.30
0.756 ± 0.26
0.711 ± 0.29
P
< 0.0001