Heart Valve Prosthesis ImplantationAortic Valve StenosisAortic ValveCardiac CatheterizationHeart Valve ProsthesisAortic Valve InsufficiencyMultidetector Computed TomographyHeart Valve DiseasesSeverity of Illness IndexQuality-Adjusted Life YearsProsthesis FailureProsthesis DesignKaplan-Meier EstimateTreatment OutcomeFemoral ArteryHemorrhagePostoperative ComplicationsHeart Defects, CongenitalChi-Square DistributionFollow-Up StudiesProspective StudiesRisk AssessmentStroke