Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: Measurement of Extravascular Lung Water to Detect and Predict Primary Graft Dysfunction Following Lung Transplant
Brief Summary:
Primary graft dysfunction (PGD) is the most common cause of early morbidity and mortality following lung transplant and is characterized by acute lung injury and capillary leak leading to an increase in extravascular lung water index (ELWI) and impaired graft function. PGD has many features in common with acute respiratory distress syndrome (ARDS). PGD may be life-threatening and can also lead to impaired long term lung function. In ARDS, a restrictive fluid strategy has been associated with an improvement in lung function and outcomes. Accurate methods of evaluating, quantifying and guiding the hemodynamic / fluid management and limiting the extent of ELWI that accumulates in the setting of PGD are lacking. Using transpulmonary thermodilution to estimate ELWI and the pulmonary permeability index (PPI) represents a novel approach to fluid management, which has been used in patients with ARDS, but to date not in the transplant setting. To determine if these measurements may better guide the management of lung transplant patients, the investigators first wish to establish whether these methods are able to predict the onset of clinical pulmonary edema earlier, whether they correlated with traditional markers of PGD, and whether they may be useful for predicting outcomes.
AIM 1: The investigators will evaluate the correlation between ELWI and current surrogates of pulmonary edema in lung transplant patients with and without Primary Graft Dysfunction (PGD)
AIM 2: The investigators will correlate the use of ELWI and PPI to determine the presence and severity of PGD.
AIM 3: a) The investigators will determine whether early measurements of ELWI and PPI can predict the onset of PGD.
b) Across different strata of PGD, the investigator