Foramen Ovale, PatentHeart Septal Defects, AtrialEmbolism, ParadoxicalForamen OvaleEchocardiography, TransesophagealStrokeSeptal Occluder DeviceAtrial SeptumHeart AneurysmIntracranial EmbolismPatents as TopicCardiac CatheterizationValsalva ManeuverPlasmodium ovaleEmbolismHeart SeptumMigraine with AuraIschemic Attack, TransientProstheses and ImplantsBalloon OcclusionSecondary PreventionHeart Septal DefectsEchocardiographyMigraine DisordersForamen MagnumDecompression SicknessCardiac Surgical ProceduresUltrasonography, Doppler, TranscranialRecurrenceTreatment OutcomeBrain IschemiaCerebrovascular DisordersHigh Pressure Neurological SyndromeFollow-Up StudiesDivingEmbolism, AirAnticoagulantsRisk FactorsProspective StudiesPulmonary EmbolismHeart AtriaStroke, LacunarIntracranial Embolism and ThrombosisContrast MediaRetrospective StudiesEchocardiography, Doppler, ColorFluoroscopyThromboembolismProsthesis ImplantationDevice RemovalCarcinoid Heart DiseaseMagnetic Resonance ImagingEmbolectomyVena Cava, InferiorWarfarinAspirinHeart DiseasesCardiac TamponadePrevalenceRespiratory ParalysisThrombosisAnoxiaForeign-Body MigrationEchocardiography, Three-DimensionalHeart ValvesDyspneaCerebral InfarctionTime FactorsPlatelet Aggregation InhibitorsEchoencephalographyFibrinolytic AgentsGelatinEquipment DesignRadiography, InterventionalElectrocardiographyCase-Control StudiesProsthesis DesignCatheterizationTomography, X-Ray ComputedAbsorbable ImplantsAge FactorsIntention to Treat AnalysisAtrial AppendageNeuroimagingPredictive Value of TestsPostoperative ComplicationsCerebral Arterial DiseasesPostureSingle-Blind MethodCerebral Arteries