Hypertension, PulmonaryHypertensionBlood PressurePulmonary ArteryPressureHypertrophy, Right VentricularMonocrotalinePersistent Fetal Circulation SyndromePulmonary CirculationAntihypertensive AgentsAnoxiaHemodynamicsVascular ResistancePulmonary Wedge PressureHypertension, RenalHypertension, PortalLungVentricular Function, RightPulmonary EmbolismVasodilator AgentsBlood Pressure DeterminationIloprostHydrostatic PressureSulfonesVentricular Dysfunction, RightHypertension, RenovascularBone Morphogenetic Protein Receptors, Type IIEpoprostenolArterial PressureEndarterectomyCardiac CatheterizationPurinesChronic DiseaseNitric OxideHypertension, MalignantBlood Pressure Monitoring, AmbulatoryEndothelin-1Disease Models, AnimalAdministration, InhalationPhosphodiesterase 5 InhibitorsVentricular PressureCardiac OutputHeart RatePoisonsTime FactorsRats, Sprague-DawleySystoleEchocardiography, DopplerVasoconstrictionVenous PressureEchocardiographyIntraocular PressureIntracranial PressureTreatment OutcomeMuscle, Smooth, VascularCyclic Nucleotide Phosphodiesterases, Type 5Risk FactorsPulmonary Heart DiseaseReceptors, EndothelinPhosphodiesterase InhibitorsProspective StudiesAtmospheric PressurePiperazinesHypertension, Pregnancy-InducedPulmonary Veno-Occlusive DiseaseTransducers, PressureRats, Inbred SHRScleroderma, SystemicReninFollow-Up StudiesOcular HypertensionVasodilationPregnancy Complications, CardiovascularPulmonary Gas ExchangeHeart VentriclesNitric Oxide Synthase Type IIITricuspid Valve InsufficiencyOxygenRetrospective StudiesDiastoleKidneySheepProstaglandins IEndothelium, VascularSeverity of Illness IndexRats, Inbred WKYRats, WistarIntracranial HypertensionThromboembolismAir PressureVasoconstrictor AgentsPrevalenceCatheterization, Swan-GanzDexfenfluramineMyocytes, Smooth MuscleReceptor, Endothelin AInfant, NewbornAngiotensin IIPulmonary EdemaAppetite Depressants