Sinus of ValsalvaValsalva ManeuverMaxillary SinusCranial SinusesParanasal SinusesCavernous SinusAortic AneurysmCarotid SinusFrontal SinusParanasal Sinus DiseasesSphenoid SinusCoronary SinusCoronary Vessel AnomaliesSinus Thrombosis, IntracranialSick Sinus SyndromeEthmoid SinusParanasal Sinus NeoplasmsTachycardia, SinusAortic RuptureEchocardiography, TransesophagealReplantationMaxillary Sinus NeoplasmsAutonomic Nervous SystemPilonidal SinusTransverse SinusesHeart RateDilatation, PathologicUterine ProlapseAortic Valve InsufficiencyPelvic FloorEchocardiographyAortic ValveSuperior Sagittal SinusElectrocardiographyHeadache Disorders, SecondaryTomography, X-Ray ComputedHeart Septal Defects, AtrialAutonomic Nervous System DiseasesHeadache Disorders, PrimaryFractalsFistulaBlood PressureSinoatrial NodeHeart AtriaAortographyEchocardiography, Doppler, ColorSupine PositionTreatment OutcomeCardiac CatheterizationAneurysm, RupturedHypotension, OrthostaticCystoceleBaroreflexPostureCatheter AblationSinus Arrest, CardiacEmbolism, ParadoxicalCerebral VeinsImaging, Three-DimensionalHeart Septal Defects, VentricularCardiac Surgical ProceduresPressoreceptorsButylscopolammonium BromideUrinary Incontinence, StressAtrial FibrillationPneumocephalusTilt-Table TestVascular FistulaMagnetic Resonance ImagingHeart Septal DefectsPure Autonomic FailureUltrasonography, Doppler, TranscranialHeart AneurysmSyncopeTime FactorsForamen Ovale, PatentReproducibility of ResultsPrimary DysautonomiasCoronary AngiographyRectoceleUrodynamicsSuburethral SlingsEustachian TubeHeartHemodynamicsRespirationPetrosal Sinus SamplingReflexCardiac Pacing, ArtificialHeart Valve Prosthesis ImplantationLateral Sinus ThrombosisHeart VentriclesBlood Flow VelocityFollow-Up StudiesTachycardiaProspective StudiesMaximal Voluntary VentilationKinetocardiographyAneurysm, FalseSeptal Occluder Device