Fig. 2From: Positional effects on the distributions of ventilation and end-expiratory gas volume in the asymmetric chest—a quantitative lung computed tomographic analysisFRC response to body position. No differences in FRC were observed among the four horizontal positions (left, prone, right, and supine) with or without PLEF at PEEP1. Semi-Fowler’s position exhibited significantly higher FRC compared to all horizontal positions with and without PLEF (asterisk denotes statistical significance). Means and standard deviations are shown. BSL baseline, PEEP positive end-expiratory pressure, PLEF pleural effusion, FRC functional residual capacityBack to article page