Coronary SinusCoronary VesselsCoronary AngiographyCoronary CirculationCoronary Artery DiseaseSinus of ValsalvaAngioplasty, Balloon, CoronaryCoronary StenosisCoronary Artery BypassMaxillary SinusCranial SinusesCoronary DiseaseParanasal SinusesCardiac Pacing, ArtificialCavernous SinusCoronary Vessel AnomaliesElectrocardiographyVena Cava, SuperiorCoronary AneurysmCarotid SinusCoronary VasospasmCardiac CatheterizationHeart AtriaCatheter AblationFrontal SinusParanasal Sinus DiseasesDogsSphenoid SinusPacemaker, ArtificialTreatment OutcomeHeart Conduction SystemMyocardial InfarctionCoronary ThrombosisAtrial FibrillationElectrophysiologic Techniques, CardiacAtrioventricular NodeMyocardiumStentsSinus Thrombosis, IntracranialHeart Arrest, InducedTime FactorsFollow-Up StudiesCoronary RestenosisSick Sinus SyndromeElectrodes, ImplantedAtrial FlutterProsthesis ImplantationHemodynamicsHeartEthmoid SinusTachycardia, Sinoatrial Nodal ReentryMyocardial IschemiaProspective StudiesTomography, X-Ray ComputedBundle of HisCardiac Resynchronization Therapy DevicesFluoroscopyCoronary OcclusionPhlebographyRisk FactorsAtrial FunctionPercutaneous Coronary InterventionCardiac CathetersParanasal Sinus NeoplasmsHeart VentriclesAtrial SeptumFeasibility StudiesTachycardia, Atrioventricular Nodal ReentryTachycardia, SupraventricularSinoatrial NodeEchocardiographyTachycardia, SinusEquipment DesignVeinsDilatation, PathologicCoronary Care UnitsEchocardiography, TransesophagealRetrospective StudiesPredictive Value of TestsBlood Flow VelocityHeart FailureWolff-Parkinson-White SyndromeBody Surface Potential MappingUltrasonography, InterventionalTachycardia, ParoxysmalBlood PressureVasodilator AgentsMaxillary Sinus NeoplasmsArteriovenous FistulaHeart SeptumCatheterizationCardiopulmonary BypassRecurrenceCardiac Resynchronization TherapyMitral ValveCardiac Surgical ProceduresOxygen ConsumptionPulmonary VeinsElectric CountershockHeart Block