Anatomy, RegionalPulmonary CirculationHistory, 16th CenturyPulmonary ArteryHypertension, PulmonaryBlood CirculationLungAnoxiaVascular ResistanceDuctus ArteriosusPulmonary Heart DiseaseHemodynamicsVasoconstrictionPulmonary VeinsHypertrophy, Right VentricularAtrial PressureBlood PressureNitric OxideCapillary ResistanceCardiac OutputSheepVentricular Function, RightPersistent Fetal Circulation SyndromePulmonary Gas ExchangeVasodilationDogsPerfusionPulmonary Wedge PressureVasodilator AgentsExtracorporeal CirculationModels, CardiovascularBronchial ArteriesPulmonary EdemaBlood Flow VelocityCardiac Catheterization15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidPhysiologyOsteoarthropathy, Secondary HypertrophicFetusVentricular Dysfunction, RightRegional Blood FlowAdministration, InhalationVenous PressureSynchrotronsEndothelin-1Cardiography, ImpedanceOxygenRespirationPulsatile FlowMonocrotalinePulmonary Valve StenosisCapillariesVasoconstrictor AgentsPulmonary AlveoliPulmonary EmbolismAnimals, NewbornEndothelium, VascularDuctus Arteriosus, PatentProstaglandin Endoperoxides, SyntheticAdrenomedullinHeart Defects, CongenitalNitric Oxide SynthaseNitroarginineCollateral CirculationEndothelinsChronic DiseaseNitric Oxide Synthase Type IIIEpoprostenolMuscle, Smooth, VascularHeart VentriclesTime FactorsBlood VesselsArteriovenous FistulaMicrocirculationAngiographyRats, Sprague-DawleyLung DiseasesBlood Gas AnalysisInfant, NewbornBlood VolumeReceptors, EndothelinCyclic GMPEnterohepatic CirculationPregnancySwineHeartNitroprussidePressureHeart RateHematocritCoronary CirculationCerebrovascular CirculationAtrial Natriuretic FactorRabbitsEchocardiography, DopplerProstaglandins