Heart Septal Defects, AtrialTherapeutic OcclusionHeart Septal DefectsHeart Septal Defects, VentricularSeptal Occluder DeviceEndocardial Cushion DefectsHeart BlockAtrioventricular NodeCardiac CatheterizationAngiocardiographyHeart Conduction SystemEchocardiography, TransesophagealHeart SeptumProstheses and ImplantsHeart Defects, CongenitalBalloon OcclusionProsthesis ImplantationAtrioventricular BlockEchocardiographyElectrocardiographyPulmonary Valve StenosisBundle of HisCardiac Surgical ProceduresAtrial SeptumBundle-Branch BlockArrhythmias, CardiacHeartTreatment OutcomeHeart AtriaNeural ConductionFollow-Up StudiesNAV1.5 Voltage-Gated Sodium ChannelHeart ValvesForamen OvalePacemaker, ArtificialHeart RateSick Sinus SyndromeRetrospective StudiesSinoatrial NodeConnexinsPulmonary VeinsMuscular Dystrophy, Emery-DreifussCardiac Pacing, ArtificialEchocardiography, Doppler, ColorPhonocardiographyWolff-Parkinson-White SyndromeHeart VentriclesAtrial FibrillationCatheter AblationCardiomyopathy, DilatedAtrial FunctionTransposition of Great Vessels