Figure 2From: Preliminary study of ventilation with 4 ml/kg tidal volume in acute respiratory distress syndrome: feasibility and effects on cyclic recruitment - derecruitment and hyperinflationIndividual changes in pH. The graphs present individual data of pH during the protocol, with the five patients randomized to the sequence Vt 4 to Vt 6 (ml/kg) (A) and the five patients randomized to the sequence Vt 6 to Vt 4 (ml/kg) (B). Vt, tidal volume.Back to article page