Pulmonary EmbolismPregnancyVenous ThrombosisEmbolismEmbolism, FatVentilation-Perfusion RatioPregnancy ComplicationsPregnancy OutcomeEmbolectomyVena Cava FiltersThrombophlebitisAnticoagulantsPregnancy, AnimalEmbolism, ParadoxicalFibrin Fibrinogen Degradation ProductsPregnancy, EctopicThromboembolismAngiographyTomography, Spiral ComputedVentricular Dysfunction, RightIntracranial EmbolismPregnancy Complications, CardiovascularVenous ThromboembolismEmbolism, Amniotic FluidAcute DiseasePulmonary ArteryPhlebographyPregnancy Trimester, FirstTomography, X-Ray ComputedIntracranial Embolism and ThrombosisPregnancy RatePregnancy Trimester, ThirdHeparinPregnancy TrimestersHeparin, Low-Molecular-WeightPregnancy TestsProspective StudiesRisk FactorsPregnancy, MultipleRetrospective StudiesFibrinolytic AgentsTechnetium Tc 99m Aggregated AlbuminVena Cava, InferiorFemoral VeinThrombolytic TherapyPregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondThrombosisPopliteal VeinPregnancy Complications, NeoplasticWarfarinTreatment OutcomePregnancy in AdolescenceHemorrhageEmbolism, CholesterolPulmonary InfarctionPerfusion ImagingPostoperative ComplicationsRecurrencePregnancy Complications, InfectiousPregnancy Complications, HematologicPredictive Value of TestsIliac VeinHemoptysisAbortion, SpontaneousRisk AssessmentTime FactorsThrombectomyEchocardiographyAutopsyFollow-Up StudiesStreptokinaseKrypton RadioisotopesThrombophiliaPregnancy ProteinsPregnancy, UnplannedSensitivity and SpecificityEchocardiography, TransesophagealEnoxaparinPregnancy, High-RiskXenon RadioisotopesPregnancy, UnwantedIncidenceGestational AgeForamen Ovale, PatentShockInfant, NewbornAntifibrinolytic AgentsHeart DiseasesRadionuclide ImagingTachycardia, SinusCohort StudiesPregnancy, ProlongedPre-EclampsiaPregnancy, TwinLungPlacentaFatal OutcomeRadiography, Thoracic