Figure 1From: Manual hyperinflation attenuates reduction of functional residual capacity in cardiac surgical patients: a randomized controlled trialPulmonary function measurements. Preoperative functional residual capacity (FRC (l); mean, 95% CI) and FRC at 1, 3, and 5 days after extubation in the routine MH group (closed circles) and in the on-demand MH group (open circles).Back to article page