Investigation on the predictive value of the dynamic changes of EVLWI and PVPI on the prognosis of ARDS patients

To investigate the dynamic changes of extra vascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI) on the prognosis of acute respiratory distress syndrome (ARDS), and predict the risk factors affecting prognosis of ARDS. 70 patients meeting ARDS Berlin definition, who were admitted to the ICU from July 2012 to July 2014, were analyzed with a prospective method. The patients were divided into a survival group and a death group according to their survival situation in 28 days. EVLWI (EVLWI1-EVLWI4), PVPI (PVPI1-PVPI4), DeltaEVLWI (subtracting EVLWI day 4 from day 1), and DeltaPVPI (subtracting PVPI day 4 from day 1) of the two groups of patients from the 1st day to the 4th day were monitored by the pulse indicator continuous cardiac output (PiCCO). Parameters including the acute physiology and chronic health evaluation (APACHE II) score, sequential organ failure assessment (SOFA) score, EVLWI, PVPI, DeltaEVLWI, DeltaPVPI, oxygenation index (OI), CVP, the number of organ dysfunction w