Figure 1.

Flow-pressure diagram showing the difference of MPAP and PAOP (MPAP-PAOP) and cardiac index. The dashed lines indicate the isoresistance lines from 600 to 300 dyne/s/cm5. INO, inhaled nitric oxide; MPAP, mean pulmonary arterial pressure; PAOP, pulmonary artery occluded pressure.

Vizza et al. Critical Care 2001 5:355   doi:10.1186/cc1069