Fig. 1

Effects of R-100 on pulmonary gas exchange evaluated by PaO₂/FiO₂ ratio (a) and pulmonary shunt fraction (b). PaO₂ is a oxygen partial pressure (mm Hg) in arterial blood. FiO₂ represents oxygen partial pressure (mm Hg) in inspired air. Data are expressed as mean ± SEM. *P < 0.05 vs. control