Coronary SinusCoronary VesselsHeart VentriclesCoronary AngiographyCoronary CirculationSinus of ValsalvaCoronary Artery DiseaseDouble Outlet Right VentricleVentricular Function, RightAngioplasty, Balloon, CoronaryVentricular Dysfunction, RightCardiac Pacing, ArtificialCoronary StenosisHeart AtriaElectrocardiographyMyocardiumCoronary Artery BypassCranial SinusesHeartMaxillary SinusCoronary Vessel AnomaliesCoronary DiseaseCardiac CatheterizationDogsHypertrophy, Right VentricularParanasal SinusesVena Cava, SuperiorHeart Conduction SystemHeart Defects, CongenitalCavernous SinusPacemaker, ArtificialCatheter AblationEchocardiographyHemodynamicsHeart SeptumCerebral VentriclesCoronary AneurysmVentricular FunctionTransposition of Great VesselsCarotid SinusTreatment OutcomeCoronary VasospasmElectrophysiologic Techniques, CardiacFrontal SinusHeart Septal Defects, VentricularMyocardial InfarctionParanasal Sinus DiseasesTricuspid ValveSphenoid SinusMyocardial ContractionTime FactorsThird VentriclePulmonary ArteryFourth VentricleAtrioventricular NodeBundle of HisCardiac Surgical ProceduresFistulaEndocardiumFetal HeartFollow-Up StudiesTetralogy of FallotMyocardial IschemiaAtrial FibrillationTomography, X-Ray ComputedHeart FailureVentricular Function, LeftAtrial FunctionCoronary ThrombosisPericardiumHeart Septal DefectsLateral VentriclesHeart Arrest, InducedStroke VolumeElectrodes, ImplantedBlood PressureProspective StudiesSinus Thrombosis, IntracranialAtrial FlutterDilatation, PathologicSick Sinus SyndromeBody Surface Potential MappingEchocardiography, TransesophagealVentricular SeptumEbstein AnomalyHypertension, PulmonaryEchocardiography, DopplerAngiocardiographyTachycardia, Sinoatrial Nodal ReentryEthmoid SinusCerebral Ventricle NeoplasmsCoronary RestenosisProsthesis ImplantationCoronary OcclusionSinoatrial NodeTachycardia, SinusPulmonary ValveArrhythmias, CardiacEchocardiography, Doppler, ColorHeart Block