LAUSR

Objectives: Length of stay (LOS) is a quality metric used for pathway development to improve hospital efficiency. We sought to define the predictors of prolonged LOS in patients undergoing thoracic endovascular aortic repair (TEVAR) for dissection or aneurysm by comparing demographic, operative, and postoperative factors in the National Surgical Quality Improvement Program (NSQIP). Methods: Patients undergoing TEVAR from 2005 to 2015 in the NSQIP were separated into dissection and aneurysm populations using International Classification of Diseases-Ninth Revision diagnosis codes. Groups were compared with c analysis and t-tests. Prolonged LOS was defined as those patients at or above the 75th percentile for LOS ($11 days). Univariate and multivariate logistic regression identified factors associated with prolonged LOS.