BACKGROUND: Previous trials have shown that, among high-risk patients with aortic stenosis, survival rates are similar for transcatheter aortic-valve implantation (TAVI) and surgical aortic valve replacement. The study aimed to compare the outcomes of aortic valve replacement according to the adopted surgical approach in intermediate and low risk patients. METHODS: This is a retrospective, observational, cohort study of prospectively collected data from 421 patients undergoing isolated aortic valve replacement between 2011 and 2015. A multinomial logit propensity score model based on preoperative risk factors was used to match patients 1:1:1 between conventional replacement (CAVR), minimally invasive (MIAVR) and TAVI groups, resulting in 50 matched three cohorts. RESULTS: After multinomial logit propensity score, the three groups were comparable in terms of preoperative characteristics. Mean age and Logistic EuroSCORE I of CAVR, MIAVR and TAVI groups were (84.2±5.1 vs. 82.3±4.8 vs. 85.6±4.9 years; p=0.002) and (11.4±3.6% vs. 8.3±3.4% vs. 15.8±5.4%; p<0.001) respectively. Overall mortality rates were similar for the three patient cohorts at one year. There were no significant differences related to stroke to 30 days. In the TAVI cohort, pacemaker implantation for new-onset total atrioventricular block became necessary in 30% of patients (p<0.001) and 16% of patients had some degree of paravalvular aortic regurgitation, which was more than mild (p<0.001). Total length of stay was shorter in the TAVI group when compared with surgical groups (11.5±5.3 vs. 10.1±6.9 vs 8.5±3.7 days; p=0.023). After discharge, the survival rate follow-up (average follow up: 46.7 months) was 70%, 84% and 72% for three cohorts (log Rank x2=2.40, p=0.3). CONCLUSIONS: In our experience, the three aortic valve replacement approaches offer very good results. Differences in the rate of complications were found between groups. Depending on patient's characteristics the Heart-Team group must offer the best surgical approach for each patient.
BACKGROUND: Previous trials have shown that, among high-risk patients with aortic stenosis, survival rates are similar for transcatheter aortic-valve implantation (TAVI) and surgical aortic valve replacement. The study aimed to compare the outcomes of aortic valve replacement according to the adopted surgical approach in intermediate and low risk patients. METHODS: This is a retrospective, observational, cohort study of prospectively collected data from 421 patients undergoing isolated aortic valve replacement between 2011 and 2015. A multinomial logit propensity score model based on preoperative risk factors was used to match patients 1:1:1 between conventional replacement (CAVR), minimally invasive (MIAVR) and TAVI groups, resulting in 50 matched three cohorts. RESULTS: After multinomial logit propensity score, the three groups were comparable in terms of preoperative characteristics. Mean age and Logistic EuroSCORE I of CAVR, MIAVR and TAVI groups were (84.2±5.1 vs. 82.3±4.8 vs. 85.6±4.9 years; p=0.002) and (11.4±3.6% vs. 8.3±3.4% vs. 15.8±5.4%; p<0.001) respectively. Overall mortality rates were similar for the three patient cohorts at one year. There were no significant differences related to stroke to 30 days. In the TAVI cohort, pacemaker implantation for new-onset total atrioventricular block became necessary in 30% of patients (p<0.001) and 16% of patients had some degree of paravalvular aortic regurgitation, which was more than mild (p<0.001). Total length of stay was shorter in the TAVI group when compared with surgical groups (11.5±5.3 vs. 10.1±6.9 vs 8.5±3.7 days; p=0.023). After discharge, the survival rate follow-up (average follow up: 46.7 months) was 70%, 84% and 72% for three cohorts (log Rank x2=2.40, p=0.3). CONCLUSIONS: In our experience, the three aortic valve replacement approaches offer very good results. Differences in the rate of complications were found between groups. Depending on patient's characteristics the Heart-Team group must offer the best surgical approach for each patient.
Authors: Declan Lloyd; Jessica G Y Luc; Ben Elias Indja; Vannessa Leung; Nelson Wang; Kevin Phan Journal: J Thorac Dis Date: 2019-01 Impact factor: 2.895
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