Figure 2.

Scatter plot showing the relationship between (a) oxygenation (arterial oxygen tension [PaO₂]/inspired fractional oxygen [FiO₂] ratio) and extravascular lung water (EVLW) in all patients (R² by linear regression = 0.27; P < 0.001), and (b) between minimum PaO₂/FiO₂ ratio and maximum EVLW in nonsurvivors (R² = 0.60; P = 0.005).