Hypertension, PulmonaryHypertensionPulmonary ArteryHypertrophy, Right VentricularMonocrotalinePersistent Fetal Circulation SyndromePulmonary CirculationAnoxiaBlood PressureAntihypertensive AgentsHypertension, PortalVascular ResistanceHemodynamicsHypertension, RenalPulmonary EmbolismPulmonary Wedge PressureVentricular Function, RightLungIloprostVasodilator AgentsDisease OutbreaksSulfonesVentricular Dysfunction, RightBone Morphogenetic Protein Receptors, Type IIHypertension, RenovascularEpoprostenolEndarterectomyPurinesCardiac CatheterizationChronic DiseaseHypertension, MalignantNitric OxideAdministration, InhalationPhosphodiesterase 5 InhibitorsEndothelin-1PoisonsRisk FactorsDisease Models, AnimalEchocardiography, DopplerCyclic Nucleotide Phosphodiesterases, Type 5Time FactorsPulmonary Heart DiseaseArterial PressureMuscle, Smooth, VascularPulmonary Veno-Occlusive DiseasePhosphodiesterase InhibitorsRats, Sprague-DawleyEchocardiographyVasoconstrictionPiperazinesReceptors, EndothelinPrevalenceCardiac OutputHypertension, Pregnancy-InducedScleroderma, SystemicTreatment OutcomeRetrospective StudiesProstaglandins ITricuspid Valve InsufficiencyPregnancy Complications, CardiovascularNitric Oxide Synthase Type IIIThromboembolismInfant, NewbornSheepOcular HypertensionBlood Pressure DeterminationProspective StudiesPulmonary Gas ExchangeDexfenfluramineFollow-Up StudiesSeverity of Illness IndexVasodilationAminorexEndothelium, VascularMyocytes, Smooth MuscleHeart VentriclesAppetite DepressantsSystoleEisenmenger ComplexReceptor, Endothelin ACatheterization, Swan-GanzIncidenceFenfluramineLung TransplantationRats, Inbred SHRHeart Defects, CongenitalReninHeart-Lung TransplantationRats, WistarAnemia, Sickle CellAltitude SicknessOxygenExercise ToleranceIntracranial HypertensionRats, Inbred WKYSulfonamidesAltitudeKidneyVentricular PressurePregnancy