1. Elective Aortic Root Replacement in North America: Analysis of STS Adult Cardiac Surgery Database 
Tyler Wallen, DO, Andreas Habertheuer, MD, PhD, Joseph E. Bavaria, MD, G.Chad Hughes, MD, Vinay Badhwar, MD, Jeffrey P. Jacobs, MD, Babatunde Yerokun, MD, Dylan Thibault, MS, Karianna Milewski, MD, PhD, Nimesh Desai, MD, PhD, Wilson Szeto, MD, Lars Svensson, MD, Prashanth Vallabhajosyula, MD, MS 
The Annals of Thoracic Surgery 
Volume 107, Issue 5, Pages (May 2019)
DOI: /j.athoracsur
Copyright © 2019 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Algorithm for patient selection and study inclusion. The Society of Thoracic Surgeons (STS) Adult Cardiac Surgery Database versions DCF v.2.73 and v.2.81 were queried from July 2011 to March 2016 for aortic root replacement cases. This resulted in 24,244 patients. We then excluded all patients with diagnosis of emergency or urgent status (n = 8,142), a diagnosis of endocarditis (n = 625), reoperative cases (n = 2,965), aortic arch surgery (n = 342), circulatory arrest cases (n = 3,350), and isolated coronary artery bypass grafting (CABG) or mitral valve replacement (MVR) cases (n = 8). This resulted in 8,807 cases at 808 centers across the nation to be studied. (CV = cardiovascular.)
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2019 The Society of Thoracic Surgeons Terms and Conditions