The Society of Thoracic Surgeons (STS) score is the cornerstone of risk assessment for patients with symptomatic severe aortic stenosis undergoing transcatheter aortic valve replacement (TAVR) in the United States. The current STS score model was implemented in 2008, and the coefficients are reestimated every year using the last 3-year study sample in the STS database.1 Since 2007, high-risk patients have increasingly undergone TAVR, and advances in surgical technique, anesthesia, and critical care have led to improved surgical aortic valve replacement outcomes. Consequently, the STS database study sample has changed considerably. To evaluate the effect of these changes, we compared the STS scores of 177 consecutive patients undergoing TAVR in 2008/2009 in a tertiary referral hospital in the United States with their recalculated STS scores in 2015, using the updated online calculator.
Rogers T, Koifman E, Patel N, Gai J, Torguson R, Corso P, Waksman R. Society of Thoracic Surgeons Score Variance Results in Risk Reclassification of Patients Undergoing Transcatheter Aortic Valve Replacement. JAMA Cardiol. 2017;2(4):455-456. doi:10.1001/jamacardio.2016.4132