PATIENT PROSTHESIS MISMATCH IN STENTED BIOLOGIC AORTIC VALVE PROSTHESIS: 10 YEARS’ RESULTS
Objectives: The goal of this study is to establish the relation between aortic bio prosthesis, patient prosthesis mismatch (PPM) and short-term mortality and morbidity as well as and long-term mortality.
Methods: This is a single center retrospective study with 812 patients that underwent isolated stented biologic aortic valve replacement between 2007 and 2016. The projected indexed orifice area was calculated using the in vivo previously published values. Outcomes were evaluated with the indexed effective orifice area (iEOA) as a continuous variable and/or nominal variable. Multivariable models were developed including clinically relevant co-variates.
Results: In the study population 65.9% (n=535) had no PPM, 32.6% (n=265) had moderate PPM and 1.5% (n=12) severe PPM. PPM was related with diabetes (OR:1.738, CI95:1.333-2.266; p<0.001), heart failure (OR:0.387, CI95:0.155-0.969; p=0.043) and older age (OR:1.494, CI95:1.171-1.907; p=0.001). iEOA was not an independent predictor of in-hospital mortality (OR 1.169, CI 0.039-35.441) or MACCE (OR 2.753, CI 0.287-26.453). Long term survival is significantly inferior with lower iEOA (HR 0.116, CI 0.041-0.332) and any degree of PPM decreases survival when compared with no PPM (Moderate: HR 1.542, CI 1.174-2.025; Severe HR 4.627, CI 2.083-10.276).
Conclusions: PPM appears to have no impact on short-term outcomes including mortality and morbidity. At ten years follow-up, moderate or severe PPM significantly reduces the long-term survival.
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