DilatationDilatation, PathologicGastric DilatationVasodilationCatheterizationArteriolesDilatation and CurettageBrachial ArteryLabor Stage, FirstEsophageal AchalasiaPia MaterEsophageal StenosisEndothelium, VascularVasodilator AgentsNitroglycerinPupilPulmonary Valve StenosisRegional Blood FlowProventriculusNitric OxideHyperemiaBlood Flow VelocityMarfan SyndromeAcetylcholineCoronary VesselsConstriction, PathologicTropicamideVentricular RemodelingEchocardiographyBornaviridaePulmonary ValveMydriaticsBiological FactorsTime FactorsNitroprussideCardiomyopathy, DilatedVascular ResistanceArteriesBlood PressureMicrocirculationNitroarginineFollow-Up StudiesTreatment OutcomeAortic ValveAortic AneurysmAortic Valve InsufficiencyHydronephrosisAortic DiseasesMononegavirales InfectionsVasoconstrictionHemodynamicsCholedochal CystCholangiopancreatography, Endoscopic RetrogradeEnzyme InhibitorsIndomethacinNitric Oxide SynthaseBile Duct DiseasesCoronary CirculationPsittaciformesAortic CoarctationSwineVasomotor SystemHypertrophy, Left VentricularMydriasisCerebrovascular CirculationMesenteric ArteriesAngioplasty, BalloonMitral Valve StenosisTracheal StenosisRetrospective StudiesAnti-Dyskinesia AgentsGlyburideHeart VentriclesParrotsProspective StudiesMyocardiumNG-Nitroarginine Methyl EsterBradykininEsophagusManometryTetralogy of FallotDisease Models, AnimalEsophageal PerforationMuscle, Smooth, VascularEsophagoscopyomega-N-MethylarginineAortaRats, Sprague-DawleyAorta, AbdominalTomography, X-Ray ComputedPregnancyTricuspid Valve StenosisAortic Valve StenosisHydrocephalusDose-Response Relationship, DrugDogsPancreatic DuctsVentricular Dysfunction, LeftPulmonary ArteryCerebral Ventricles