Vascular ResistanceHemodynamicsDrug ResistancePulmonary CirculationBlood PressureDrug Resistance, MicrobialDrug Resistance, BacterialCardiac OutputRegional Blood FlowHypertension, PulmonaryDrug Resistance, NeoplasmDrug Resistance, MultipleDisease ResistanceForearmHeart RateRenal CirculationDogsPulmonary ArteryVasoconstrictionDrug Resistance, ViralDrug Resistance, Multiple, BacterialVasodilationVasodilator AgentsAnti-Bacterial AgentsMicrobial Sensitivity TestsPulmonary Wedge PressureBlood Flow VelocityNitric OxideBlood CirculationNorepinephrineSplanchnic CirculationPerfusionTetracycline ResistanceVasomotor SystemSympathetic Nervous SystemDose-Response Relationship, DrugKidneyTime FactorsAirway ResistanceMutationNitroprussideHypertensionReflexVasoconstrictor AgentsLower Body Negative PressureAnoxiaCoronary CirculationPlant DiseasesPressoreceptorsPenicillin ResistanceLungPlethysmographyDrug Resistance, FungalCentral Venous PressureOxygenArteriesHypotensionBlood VolumeOxygen ConsumptionSheepEpoprostenolMolecular Sequence DataCapillary ResistanceCardiovascular SystemNG-Nitroarginine Methyl Esterbeta-Lactam ResistanceAngiotensin IIBlood Gas AnalysisBacterial ProteinsResistance TrainingCardiac CatheterizationCarotid SinusAnesthesiaCatheterization, Swan-GanzNitroglycerinAntihypertensive AgentsHypotension, OrthostaticArterial PressureAdministration, InhalationInfusions, IntravenousR FactorsReceptors, EndothelinRats, Sprague-DawleyLegArginineStroke VolumeCompliancePhenylephrineReninSwineNitric Oxide SynthaseEnzyme InhibitorsHeartHindlimbImmunity, InnateHematocritPhentolamineMicrocirculationArgininosuccinic AcidHeart Failure