Intracranial Embolism and ThrombosisIntracranial EmbolismPulmonary EmbolismThrombosisVenous ThrombosisEmbolismEmbolism, FatEmbolism, ParadoxicalCoronary ThrombosisSinus Thrombosis, IntracranialAnticoagulantsIntracranial ThrombosisCarotid Artery ThrombosisEmbolism, Amniotic FluidPhlebographyThromboembolismEmbolism, CholesterolPrimary PreventionRisk FactorsFemoral VeinVena Cava FiltersEmbolectomyIliac VeinSagittal Sinus ThrombosisHeparinFibrinolytic AgentsThrombophiliaTreatment OutcomeHeparin, Low-Molecular-WeightVenous ThromboembolismUpper Extremity Deep Vein ThrombosisVentilation-Perfusion RatioWarfarinVena Cava, InferiorThrombectomyTomography, X-Ray ComputedHemorrhageFollow-Up StudiesTime FactorsProspective StudiesAcute DiseasePlatelet Aggregation InhibitorsRecurrenceRetrospective StudiesPopliteal VeinFactor VAngiographyThrombolytic TherapyCerebral VeinsBlood CoagulationPortal VeinThrombophlebitisAntiphospholipid SyndromeIncidenceSecondary PreventionCenters for Disease Control and Prevention (U.S.)Echocardiography, TransesophagealHemostasisRisk AssessmentCavernous Sinus ThrombosisAspirinStentsSubclavian VeinJugular VeinsBleeding TimeLateral Sinus ThrombosisProthrombinMesenteric VeinsPlatelet AggregationForamen Ovale, PatentFibrin Fibrinogen Degradation ProductsEmbolism and ThrombosisCatheterization, Central VenousFatal OutcomeProtein S DeficiencyBlood PlateletsUltrasonography, Doppler, DuplexEnoxaparinDrug-Eluting StentsAntibodies, AntiphospholipidAccident PreventionTomography, Spiral ComputedPulmonary ArteryProtein C DeficiencyStrokeHeart DiseasesMesenteric Vascular OcclusionPostthrombotic SyndromeLupus Coagulation InhibitorStockings, CompressionAxillary VeinRenal VeinsFibrinolysisCatheters, IndwellingUnited StatesPostphlebitic SyndromeVentricular Dysfunction, RightFibrinCranial SinusesFibrinogen