IloprostHypertension, PulmonaryEpoprostenolReceptors, EpoprostenolVasodilator AgentsHeart FailureReceptors, ProstaglandinTreatment OutcomeAdministration, InhalationExercise ToleranceStroke VolumeFollow-Up StudiesCardiomyopathy, DilatedHemodynamicsCardiac Output, LowSeverity of Illness IndexVentricular Dysfunction, LeftMitral Valve InsufficiencyHeart Valve ProsthesisExercise TestTime FactorsEisenmenger ComplexMitral ValveHeart Valve Prosthesis ImplantationRaynaud DiseaseNatriuretic Peptide, BrainProspective StudiesEchocardiographyCardiac Pacing, ArtificialHistocompatibility Antigens Class IAntihypertensive AgentsSulfonesVentricular Function, LeftScleroderma, SystemicHistocompatibility Antigens Class IIAlprostadilCardiac CatheterizationCardiomyopathy, HypertrophicRheumatic Heart DiseasePulmonary Wedge PressureSulfonamidesCarbazolesBioprosthesisPurinesEchocardiography, DopplerInfusions, Intravenous