Pulmonary ArteryHypertension, PulmonaryPulmonary Wedge PressureBlood PressurePulmonary CirculationPressureHemodynamicsArteriesVascular ResistanceCardiac CatheterizationVentricular Function, RightCatheterization, Swan-GanzCardiac OutputArterial PressureAnoxiaEchocardiography, DopplerTricuspid Valve InsufficiencyBlood Pressure DeterminationPulmonary EdemaVentricular Dysfunction, RightLungAltitude SicknessVasodilator AgentsPulmonary EmbolismHypertrophy, Right VentricularEchocardiographyVasoconstrictionMonocrotalineDogsEpoprostenolAntihypertensive AgentsRenal ArteryMitral Valve StenosisFemoral ArteryIloprostDuctus Arteriosus, PatentCarotid ArteriesAdministration, InhalationDuctus ArteriosusMonitoring, PhysiologicOxygenTreatment OutcomeNitric OxidePulmonary Gas ExchangeTime FactorsExercise TestMesenteric ArteriesHeart Septal Defects, VentricularAltitudeHeart RateRadial ArteryCentral Venous PressureHydrostatic PressureSulfonesEmbolism, AirHeart Defects, CongenitalCerebral ArteriesVasodilationBlood Gas AnalysisSystolePulmonary Heart DiseasePulmonary VeinsMuscle, Smooth, VascularProspective StudiesHeart Septal Defects, AtrialVentricular PressureCatheterizationRespiratory Function TestsLung TransplantationHeart VentriclesChronic DiseaseHeart FailureScleroderma, SystemicBasilar ArteryFontan ProcedureBlood Flow VelocitySheepPurinesFollow-Up StudiesRetrospective StudiesDye Dilution TechniqueBrachial ArteryLung Diseases, ObstructiveCoronary Artery BypassSeverity of Illness IndexEndothelin-1SwineEndothelium, VascularNitroglycerinAngiographyStroke VolumeHypertensionThermodilutionMountaineeringVasoconstrictor AgentsHypertension, PortalVentricular Function, LeftRegional Blood FlowEisenmenger ComplexIliac Artery