Mesenteric ArteriesMesenteric Artery, SuperiorMesenteric Artery, InferiorArteriesIntestine, SmallIntestinal ObstructionMesenteric Vascular OcclusionInflammatory Bowel DiseasesCeliac ArterySuperior Mesenteric Artery SyndromeCapsule EndoscopyPulmonary ArteryShort Bowel SyndromeIntestinal DiseasesRenal ArteryIleal DiseasesCerebral ArteriesJejunal DiseasesIrritable Bowel SyndromeVasodilationMuscle, Smooth, VascularSplanchnic CirculationIntestinal NeoplasmsCarotid ArteriesVasoconstrictionMesenteric VeinsFemoral ArteryBasilar ArteryIleal NeoplasmsJejunal NeoplasmsJejunumBiological FactorsCrohn DiseaseVasoconstrictor AgentsVasodilator AgentsIleumIliac ArteryTomography, X-Ray ComputedSplenic ArteryGastrointestinal TransitEndothelium, VascularIntestinal PerforationIntestinal MucosaRats, WistarNorepinephrineVertebral ArteryHepatic ArteryCoronary Artery BypassPhenylephrineEndoscopy, GastrointestinalMyographyRadial ArteryTreatment OutcomeRats, Sprague-DawleyMammary ArteriesGastrointestinal HemorrhageDouble-Balloon EnteroscopyAcetylcholineTime FactorsCapsule EndoscopesCarotid Artery, InternalDuodenostomyAbdominal PainIntestinesSubclavian ArteryAngiographyMuscle ContractionDose-Response Relationship, DrugGastrointestinal MotilityRats, Inbred WKYLaparotomyMesenteryDigestive System Surgical ProceduresBezoarsMuscle RelaxationCarotid Artery DiseasesCoronary VesselsNitric OxideConstriction, PathologicBlood PressureBrachial ArteryColonSuperior ColliculiVena Cava, SuperiorColitis, UlcerativeDogsEndothelium-Dependent Relaxing FactorsCarotid Artery, CommonDuodenumAnastomosis, SurgicalIntussusceptionTissue AdhesionsRetrospective StudiesIleostomyAneurysmIntestinal AtresiaRegional Blood FlowDuodenal ObstructionPostoperative ComplicationsRats, Inbred SHR