441 Possible Disease Markers in BAL Fluid of BOS Patients

Purpose: Cardiopulmonary exercise testing (CPET) is a known predictor of all cause mortality in heart failure, emphysema and normal populations but has not been used post lung transplant (LnTx). We hypothesize that CPET at 1 year post LnTx is a predictor of all cause mortality, conditioned on one-year survival. Methods and Materials: An IRB approved retrospective chart review was done of all LnTx between 7/01 and 6/09 at the Columbia University Medical Center (CUMC). Initial CPET performed post LnTx with complete pulmonary function test (PFT) data 1 to 2 1⁄2 years post transplant were included for analysis. Peak watts percent predicted (PW%) and FEV1 percent predicted (FEV1%) were used. Date of death was obtained from the Social Security Index Database. Cause of death was from the final note in transplant chart.