Pulmonary CirculationPulmonary ArteryHypertension, PulmonaryLungAnoxiaPulmonary VeinsVascular ResistanceVasoconstrictionHypertrophy, Right VentricularPersistent Fetal Circulation SyndromeBlood CirculationHemodynamicsBlood VesselsSheepNitric OxideDuctus ArteriosusBlood PressurePulmonary Wedge PressurePulmonary Gas ExchangeEndothelium, VascularPulmonary EdemaVentricular Function, RightMonocrotalinePulmonary EmbolismPulmonary Heart DiseaseVasodilationCardiac OutputMuscle, Smooth, Vascular15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidPerfusionVasodilator AgentsEndothelin-1FetusOxygenAdministration, InhalationCapillariesExtravascular Lung WaterEpoprostenolVasoconstrictor AgentsDogsAtrial PressurePulmonary Veno-Occlusive DiseaseRats, Sprague-DawleyPulmonary AlveoliAnimals, NewbornEndothelial CellsNitric Oxide Synthase Type IIIReceptors, EndothelinCapillary ResistanceDisease Models, AnimalCyclic GMPChronic DiseaseMyocytes, Smooth MuscleNitric Oxide SynthaseAnatomy, RegionalRegional Blood FlowModels, CardiovascularTime FactorsMice, Inbred C57BLBlood Flow VelocityBronchial ArteriesAntigens, CD31Dose-Response Relationship, DrugExtracorporeal CirculationBone Morphogenetic Protein Receptors, Type IIRabbitsPhosphodiesterase InhibitorsCells, CulturedCardiac CatheterizationInfant, NewbornPhysiologyOsteoarthropathy, Secondary HypertrophicVentricular Dysfunction, RightVenous PressureEnzyme InhibitorsMicrocirculationSynchrotronsPulsatile FlowImmunohistochemistryCardiography, ImpedanceRespirationRespiratory MechanicsPulmonary Valve StenosisAdrenomedullinNitroarginineEndothelinsProstaglandin Endoperoxides, SyntheticAngiographyHeart Defects, CongenitalCollateral CirculationDuctus Arteriosus, PatentSignal TransductionBlood VolumePregnancyMice, KnockoutNitroprussideHeartHeart VentriclesCerebrovascular CirculationCapillary Permeability