Sinus of ValsalvaCoronary SinusCoronary Vessel AnomaliesValsalva ManeuverCoronary VesselsCoronary AngiographyCoronary CirculationCoronary Artery DiseaseCoronary StenosisAngioplasty, Balloon, CoronaryCoronary AneurysmCoronary Artery BypassCoronary DiseaseElectrocardiographyFistulaCardiac CatheterizationAortic AneurysmCoronary VasospasmCranial SinusesMaxillary SinusHeart AtriaCardiac Pacing, ArtificialParanasal SinusesTreatment OutcomeCoronary OcclusionMyocardial InfarctionCavernous SinusCatheter AblationDogsTomography, X-Ray ComputedVena Cava, SuperiorEchocardiography, TransesophagealCoronary ThrombosisEchocardiographyCarotid SinusFrontal SinusHemodynamicsHeart Conduction SystemDilatation, PathologicParanasal Sinus DiseasesSphenoid SinusInferior Wall Myocardial InfarctionHeartPacemaker, ArtificialMyocardial IschemiaVascular FistulaHeart VentriclesTime FactorsMyocardiumFollow-Up StudiesCardiac Surgical ProceduresAtrial FibrillationStentsPercutaneous Coronary InterventionElectrophysiologic Techniques, CardiacProspective StudiesCoronary RestenosisEchocardiography, Doppler, ColorAtrioventricular NodeCardiac CathetersBlood PressureBlood Flow VelocityArteriovenous FistulaSinus Thrombosis, IntracranialHeart Arrest, InducedCollateral CirculationAtrial FlutterAngina PectorisSick Sinus SyndromeReplantationVentricular Function, RightAortic ValveUltrasonography, InterventionalArterio-Arterial Fistula