Ventricular Outflow ObstructionHeart Septal Defects, VentricularDiscrete Subaortic StenosisHeart Septal DefectsHeart Septal Defects, AtrialAortic Stenosis, SubvalvularCardiomyopathy, HypertrophicHeart SeptumPulmonary ValveTetralogy of FallotHeart Defects, CongenitalEchocardiographyPulmonary Subvalvular StenosisHeart VentriclesPulmonary Valve StenosisVentricular Premature ComplexesPulmonary Valve InsufficiencyHeartTransposition of Great VesselsCardiac CatheterizationCardiac Surgical ProceduresAortic Valve StenosisTachycardia, VentricularCatheter AblationPulmonary AtresiaMitral ValveAortic ValveHeart NeoplasmsAortic Valve InsufficiencyHeart Valve Prosthesis ImplantationEchocardiography, DopplerElectrocardiographyVentricular SeptumEchocardiography, TransesophagealSinus of ValsalvaAortic CoarctationAngiocardiographyVentricular Function, RightEndocardial Cushion DefectsFetal HeartHeart Valve ProsthesisVentricular Dysfunction, RightEchocardiography, Doppler, ColorTreatment OutcomeFollow-Up StudiesPulmonary ArteryDouble Outlet Right VentricleArrhythmogenic Right Ventricular DysplasiaInfant, NewbornHeart RateHemodynamicsEchocardiography, Three-DimensionalSeptal Occluder DeviceTricuspid ValveBioprosthesisHeart AneurysmReoperationRetrospective StudiesBrugada SyndromeCardiac Valve AnnuloplastyCardiac Pacing, ArtificialMitral Valve InsufficiencyPericardiumCatheterizationHeart Conduction SystemTime FactorsPacemaker, ArtificialEndocardiumMyxomaVentricular Function, LeftTruncus Arteriosus, PersistentHeart DiseasesHeart Valve DiseasesPostoperative ComplicationsHeart AtriaAbnormalities, MultipleElectrophysiologic Techniques, CardiacCardiovascular Surgical ProceduresBundle-Branch BlockHeart ValvesCardiovascular AbnormalitiesHeart BlockBody Surface Potential MappingMyocardiumAtrioventricular BlockCineangiographyHeart FailureHypoplastic Left Heart SyndromeUltrasonography, PrenatalStroke VolumeDisopyramideAortaAtrial SeptumVentricular FibrillationExercise TestBlood Flow VelocityProspective StudiesAnti-Arrhythmia AgentsEchocardiography, StressAortopulmonary Septal Defect