Fig. 11

The pulmonary vascular distensibility reserve (PVDR), defined as the percent change in relative pulmonary blood volume variation (PBVV) in the right lung (white bars) and the left lung (gray bars). The PVDR is greatly increased in the non-dependent position on both sides, owing to an increase in absolute PBVV and a decrease in ipsilateral arterial flow. The P-values placed directly above bars reflect the hypothesis that a given bar has a non-zero value, i.e. that the PVDR is non-zero for a given pair of body positions. The P-values placed above brackets reflect the difference between the right and left lung