Transapical aortic valve implantation: mid-term outcome from the SOURCE registry

OBJECTIVES: Transapical (TA) aortic valve implantation using the Edwards SAPIEN bioprosthesis was commercially introduced in Europe in January 2008. Limited data on the mid-term results are available.

METHODS: Using data from the SOURCE-Registry (largest consecutive cohort treated using Edwards SAPIEN bioprosthesis in Europe), we report on the mid-term results (≥30 days-2 years) of TA patients.

RESULTS: Between November 2007 and December 2009, a total of 1387 patients from 38 European centres underwent TA aortic valve implantation. The mean follow-up is 14.9 months, with 1004 patients who completed 1 year and 464 patients who completed the 2-year follow-up. The mean age of patients was 80.6 ± 7.1 years with a logistic-EuroSCORE of 27.6%. The main co-morbidities were coronary artery disease (55.8%), previous bypass grafting (25.5%), porcelain aorta (10.2%), previous stroke (6.5%) and peripheral vascular disease (26.4%). A total of 840 patients (60.6%) received a 26 mm and 535 (38.6%) a 23 mm Edwards SAPIEN bioprosthesis. Survivals at 30 days, 1 year and 2 years were 88.7, 73.8 and 65.1%, respectively. Causes of the 276 deaths observed between >30 days and 2-year follow-up were cardiac in 86 patients (31.2%), non-cardiac in 142 (51.4%) and unknown in 48 (17.4%). Cardiac causes of death included heart failure (33.7%), sudden cardiac death (33.7%), myocardial infarct (8.1%), endocarditis (5.8%) and others (18.6%). Non-cardiac deaths were related to pulmonary disease (21.1%), cancer (12.7%), renal failure (11.3%), stroke (10.6%), gastrointestinal disease (7.7%) and others (36.6%). Using univariable and multivariable analyses, logistic EuroSCORE, renal insufficiency and liver diseases were identified as independent predictors of 2-year mortality.

CONCLUSIONS: These results demonstrate that in elderly patients with severe co-morbidities, TA aortic valve implantation results in excellent mid-term results. Causes of death during the mid-term follow-up are mainly non-cardiac and related to co-morbidities.