Pulmonary EmbolismVenous ThrombosisDeath, SuddenEmbolismEmbolism, FatVentilation-Perfusion RatioDeath, Sudden, CardiacEmbolectomyVena Cava FiltersThrombophlebitisAnticoagulantsEmbolism, ParadoxicalFibrin Fibrinogen Degradation ProductsSudden Infant DeathThromboembolismAngiographyVentricular Dysfunction, RightTomography, Spiral ComputedIntracranial EmbolismVenous ThromboembolismAcute DiseaseEmbolism, Amniotic FluidPulmonary ArteryPhlebographyTomography, X-Ray ComputedIntracranial Embolism and ThrombosisHeparinHeparin, Low-Molecular-WeightFibrinolytic AgentsTechnetium Tc 99m Aggregated AlbuminVena Cava, InferiorFemoral VeinThrombolytic TherapyRisk FactorsThrombosisProspective StudiesPopliteal VeinRetrospective StudiesAutopsyWarfarinHemorrhageTreatment OutcomeEmbolism, CholesterolPostoperative ComplicationsPulmonary InfarctionPerfusion ImagingRecurrencePredictive Value of TestsHemoptysisIliac VeinEchocardiographyThrombectomyTime FactorsFollow-Up StudiesStreptokinaseRisk AssessmentKrypton RadioisotopesEchocardiography, TransesophagealEnoxaparinXenon RadioisotopesThrombophiliaIncidenceShockHeart DiseasesForamen Ovale, PatentSensitivity and SpecificityAntifibrinolytic AgentsFatal OutcomeRadionuclide ImagingTachycardia, SinusLungChest PainRadiography, ThoracicPregnancy Complications, CardiovascularBandagesLegPlethysmography, ImpedancePrognosisDevice RemovalSeverity of Illness IndexKryptonStockings, CompressionPulmonary CirculationHeart AtriaPulmonary Heart DiseaseDyspneaHypertension, PulmonaryTissue Plasminogen ActivatorIntermittent Pneumatic Compression Devices