Coronary SinusIntracranial AneurysmAneurysmCoronary VesselsCoronary AngiographyCoronary CirculationAneurysm, InfectedSinus of ValsalvaCoronary Artery DiseaseAortic AneurysmCoronary AneurysmAngioplasty, Balloon, CoronaryHeart AneurysmAortic Aneurysm, ThoracicCoronary StenosisCoronary Artery BypassAneurysm, DissectingCranial SinusesMaxillary SinusCoronary DiseaseParanasal SinusesEmbolization, TherapeuticTreatment OutcomeCardiac Pacing, ArtificialIliac AneurysmTomography, X-Ray ComputedCavernous SinusCoronary Vessel AnomaliesElectrocardiographyVena Cava, SuperiorCarotid SinusCoronary VasospasmHeart AtriaBlood Vessel Prosthesis ImplantationCerebral AngiographyCardiac CatheterizationCatheter AblationFrontal SinusDogsParanasal Sinus DiseasesAortic RuptureAneurysm, FalseSphenoid SinusStentsFollow-Up StudiesPacemaker, ArtificialHeart Conduction SystemTime FactorsBlood Vessel ProsthesisMyocardial InfarctionAorta, AbdominalCoronary ThrombosisAtrial FibrillationHeart Arrest, InducedMyocardiumAtrioventricular NodeElectrophysiologic Techniques, CardiacAortographyRisk FactorsAngiography, Digital SubtractionSinus Thrombosis, IntracranialSubarachnoid HemorrhageHemodynamicsDilatation, PathologicProspective StudiesEndovascular ProceduresRetrospective StudiesSick Sinus SyndromeVascular Surgical ProceduresAtrial FlutterHeartTachycardia, Sinoatrial Nodal ReentryCoronary RestenosisEthmoid SinusMyocardial IschemiaBundle of HisCoronary OcclusionPostoperative ComplicationsElectrodes, ImplantedHeart VentriclesFeasibility StudiesAngiographyProsthesis ImplantationAtrial FunctionPhlebographyCardiac Resynchronization Therapy DevicesPercutaneous Coronary InterventionPredictive Value of TestsEquipment DesignEchocardiographyAtrial SeptumEchocardiography, TransesophagealArteriovenous FistulaSurgical InstrumentsCardiac CathetersParanasal Sinus NeoplasmsVeinsBlood Flow VelocityTachycardia, Atrioventricular Nodal ReentryTachycardia, Supraventricular