EpoprostenolVasodilator AgentsHypertension, PulmonaryAntihypertensive AgentsIloprostDrug StorageHemodynamicsVasodilationInfusions, IntravenousAdministration, IntravenousTolazolineVascular ResistancePulmonary Veno-Occlusive DiseaseExercise ToleranceSulfonesPreservatives, PharmaceuticalPulmonary CirculationPurinesHemangioma, CapillaryPulmonary ArteryBlood PressureNitroprussideHeart-Lung TransplantationNitric OxideSulfonamidesPulmonary Wedge PressureAcenocoumarolProstaglandinsDose-Response Relationship, DrugHypertension, PortalInfusions, ParenteralAcetylcholineRegional Blood FlowTreatment OutcomeDrug StabilityHeart Septal DefectsChemistry, PharmaceuticalCardiac OutputNitroglycerinForearmPiperazinesAdministration, InhalationInfusions, Intra-ArterialInjections, IntravenousEndothelium, VascularLung TransplantationHydralazineExcipientsDrug Therapy, CombinationPlatelet AggregationBradykininVasoconstrictionHeart RateConnective Tissue DiseasesFollow-Up StudiesBleeding TimeNG-Nitroarginine Methyl EsterPapaverineCalcitonin Gene-Related PeptideReceptors, EpoprostenolPlatelet Aggregation InhibitorsVasoconstrictor AgentsMesenteric ArteriesHyperemiaCoronary CirculationTime FactorsAdenosineCoronary VesselsAdministration, OralVasomotor SystemIsoxazolesSplanchnic Circulationomega-N-MethylarginineVentricular Function, RightNitric Oxide SynthaseDogsDrug Administration ScheduleArginineAdenosine DiphosphateArteriolesDrug EvaluationEndothelium-Dependent Relaxing FactorsPlethysmographyMuscle, Smooth, VascularAngiographyRetrospective StudiesAdrenomedullinProspective StudiesRenal CirculationCromakalimSingle-Blind MethodIndomethacinNitroarginineAnticoagulantsPulmonary EmbolismDipyridamoleSurvival RateMinoxidilClinical Trials as TopicIsosorbide Dinitrate