Extravascular lung water index and pulmonary vascular permeability index/intrathoracic blood volume correlation in non-ALI/ARDS patients. Correlation between extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI) and that between EVLWI and intrathoracic blood volume (ITBV) in patients with non-acute lung injury (ALI)/acute respiratory distress syndrome (ARDS). For this analysis, cardiogenic edema and pleural effusion with atelectasis patients were combined as non-ALI/ARDS. EVLWI had a moderate correlation with PVPI (r = 0.464, P < 0.01) (A) and with ITBV (r = 0.493, P < 0.01) (B). EVLWI-0, extravascular lung water index on the day of enrollment; PVPI-0, pulmonary vascular permeability index on the day of enrollment; ITBV-0, intrathoracic blood volume on the day of enrollment.