Proton-Translocating ATPasesPortal VeinHypertension, PortalHypertensionHeartHeart FailureHypertension, PulmonaryPortal SystemCattleHeart RateMyocardial ContractionBlood PressurePortal PressureHypertension, RenalHemodynamicsAntihypertensive AgentsMyocardiumHeart DiseasesHypertension, RenovascularVentricular Function, LeftTime FactorsRisk FactorsHypertension, MalignantEchocardiographyDogsHeart Defects, CongenitalHeart TransplantationCardiotonic AgentsStroke VolumeVentricular Dysfunction, LeftCardiomyopathy, DilatedTreatment OutcomeFollow-Up StudiesMuscle ContractionHeart AtriaRats, Sprague-DawleyAdrenergic beta-AntagonistsVascular ResistanceMyocytes, CardiacHeart VentriclesSystoleLiver CirculationProspective StudiesCardiomegalyRats, Inbred F344DiureticsDisease Models, AnimalNorepinephrinePulmonary ArteryMyocardial InfarctionHeart Function TestsChronic DiseaseReninKidneyNatriuretic Peptide, BrainAngiotensin-Converting Enzyme InhibitorsUterine ContractionRetrospective StudiesSympathetic Nervous SystemRats, WistarVasodilator AgentsHypertension, Pregnancy-InducedDiastoleCardiomyopathiesHypertrophy, Left VentricularFetal HeartCalciumMyocardial IschemiaCardiac Pacing, ArtificialDose-Response Relationship, DrugAtrial Natriuretic FactorEsophageal and Gastric VaricesAngiotensin IIPortasystemic Shunt, SurgicalRats, Inbred SHRHeart ValvesVentricular RemodelingVentricular PressurePrognosisVasoconstrictionCardiovascular DiseasesCardiac OutputSeverity of Illness IndexEndothelin-1Pulmonary Wedge PressureOcular HypertensionPropanolaminesRenin-Angiotensin SystemAldosteroneSplenic VeinNitric OxideCohort StudiesPrevalenceIsoproterenolRats, Inbred WKYBlood Pressure DeterminationRisk AssessmentCaptoprilPredictive Value of TestsCoronary Disease