Foramen Ovale, PatentHeart Septal Defects, AtrialEchocardiography, TransesophagealEmbolism, ParadoxicalForamen OvaleStrokeSeptal Occluder DeviceAtrial SeptumHeart AneurysmIntracranial EmbolismPatents as TopicCardiac CatheterizationValsalva ManeuverPlasmodium ovaleEmbolismHeart SeptumMigraine with AuraIschemic Attack, TransientProstheses and ImplantsCerebrovascular DisordersBrain IschemiaBalloon OcclusionSecondary PreventionHeart Septal DefectsMigraine DisordersEchocardiographyUltrasonography, Doppler, TranscranialForamen MagnumDecompression SicknessCardiac Surgical ProceduresRecurrenceTreatment OutcomeHigh Pressure Neurological SyndromeRisk FactorsProspective StudiesAnticoagulantsDivingEmbolism, AirFollow-Up StudiesPulmonary EmbolismStroke, LacunarHeart AtriaIntracranial Embolism and ThrombosisContrast MediaCerebral InfarctionThromboembolismFluoroscopyMagnetic Resonance ImagingEchocardiography, Doppler, ColorRetrospective StudiesWarfarinDevice RemovalProsthesis ImplantationFibrinolytic AgentsCarcinoid Heart DiseaseEmbolectomyVena Cava, InferiorHeart DiseasesPrevalenceCardiac TamponadeRespiratory ParalysisAspirinThrombosisAnoxiaForeign-Body MigrationTime FactorsHeart ValvesEchoencephalographyTomography, X-Ray ComputedDyspneaEchocardiography, Three-DimensionalHemiplegiaCase-Control StudiesGelatinAge FactorsPredictive Value of TestsRadiography, InterventionalEquipment DesignPostureCerebral ArteriesSingle-Blind MethodParesisElectrocardiographyPlatelet Aggregation InhibitorsAtrial AppendageAbsorbable ImplantsCerebral Arterial DiseasesNeuroimagingCatheterizationProsthesis DesignSensitivity and SpecificityIntention to Treat Analysis