Venous ThrombosisThrombophlebitisThrombosisFemoral VeinPulmonary EmbolismIliac VeinPhlebographyUpper Extremity Deep Vein ThrombosisPopliteal VeinAnticoagulantsVeinsLegFibrin Fibrinogen Degradation ProductsPortal VeinHeparin, Low-Molecular-WeightLower ExtremityVaricose VeinsVenous ThromboembolismUltrasonography, Doppler, DuplexVena Cava, InferiorPostthrombotic SyndromeIntermittent Pneumatic Compression DevicesPlethysmography, ImpedanceVena Cava FiltersStockings, CompressionHeparinPostphlebitic SyndromeSaphenous VeinThrombophiliaBandagesVenous InsufficiencyWarfarinThromboembolismMesenteric VeinsTreatment OutcomeFactor VRenal VeinsThrombectomyFibrinolytic AgentsPostoperative ComplicationsSplenic VeinSubclavian VeinJugular VeinsProspective StudiesRisk FactorsHemorrhageSinus Thrombosis, IntracranialIntracranial ThrombosisTime FactorsCoronary ThrombosisRetrospective StudiesActivated Protein C ResistanceThrombolytic TherapyEnoxaparinProtein S DeficiencyUltrasonography, DopplerRecurrenceFollow-Up StudiesGravity SuitsVaricose UlcerCatheterization, PeripheralPregnancy Complications, CardiovascularLimb BudsFibrinogenPopliteal CystUltrasonography, Doppler, ColorAxillary VeinProthrombinIncidenceCerebral VeinsTomography, X-Ray ComputedArthroplasty, Replacement, KneeEarly AmbulationUltrasonographyCatheterization, Central VenousCarotid Artery ThrombosisRisk AssessmentBudd-Chiari SyndromeVenous ValvesDoppler EffectBlood CoagulationAntifibrinolytic AgentsPulmonary VeinsEdemaDalteparinAngiographyVascular Surgical ProceduresVascular MalformationsFibrinExtremitiesSerum GlobulinsNadroparinEmergency ShelterCentral Cord SyndromeAcute DiseaseErysipelasVascular PatencyArmLeg InjuriesTourniquets