Abstract 14416: Relationship between Society of Thoracic Surgeons Score and Logistic EuroSCORE Predicting the Mortality Risk in Patients Referred for Trans-Catheter Aortic Valve Implantation
Background: Both Society of Thoracic Surgeons (STS) and logistic Euroscore are currently used to as a main inclusion criteria to identify high risk or inoperable patients for trans-catheter aortic valve implantation (TAVI). Aim: To examine the correlation between STS and logistic Euroscore and their performance characteristics in patients referred for TAVI.
Methods: The study cohort consisted of 562 high risk patients with severe aortic stenosis (AS) who referred to participate in the clinical trial of percoutaneous aortic valve replacement. STS and Logistic Euroscore were calculated. The performance of the STS and logistic Euroscore were evaluated in those four groups: I- medical/balloon aortic valvuloplasty (BAV) 369 (65.6%) (medical-147(26.1%),BAV-222(39.5%)), II-surgical AVR 108(19.2%), III- TAVI -85(15.1%).
Results: The mean age was 82.0±8, Female gender 319(56.7%). The mean STS score was 11.5±6 and mean logistic Euroscore was 38.7±22.5. Pearson correlation coefficient revealed a good linear relationship between the STS and logistic Euroscore, r=0.6, p<0.001. During median follow up of 186.5 [ 54.25–447.75] days the overall mortality was 201(35.7%). The STS and logistic score in the patients how died were higher compare to patients alive 13.0±6.1 and vs. 10.6±5.7 and 42.9±22.6 and 36.3±22.2 p <0.001 respectively. The observed 30 days mortality and predicted mortality by STS and by logistic Euroscore in each group are presented in table. Although the STS is better predictor 30 days mortality then logistic Euroscore, both models had suboptimal discretionary power.
Conclusions: STS score is superior to the logistic Euro score in predicting mortality in high risk patients with severe AS. Clinical judgment should play a major role in predicting mortality risk whereas currently available risk score algorithms.
- © 2010 by American Heart Association, Inc.