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Table 1

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 < 0.0001 < 0.0001