The Society of Thoracic Surgeons National Database 2019 Annual Report.

The Society of Thoracic Surgeons (STS) National Database was established in 1989 as an initiative for quality improvement and patient safety for cardiothoracic surgery. The STS National Database has 4 components, each focusing on a distinct discipline-Adult Cardiac Surgery, General Thoracic Surgery, Congenital Heart Surgery, and mechanical circulatory support with the STS Interagency Registry for Mechanical Circulatory Support (Intermacs)/Pediatric Interagency Registry for Mechanical Circulatory Support (Pedimacs) Database. In December 2015, The Annals of Thoracic Surgery began publishing a monthly series of scholarly articles on outcomes analysis, quality improvement, and patient safety. This article provides the fourth annual summary of the status of the STS National Database.