PhenylephrineMedication ErrorsMedication AdherenceAdrenergic alpha-AgonistsAdrenergic alpha-1 Receptor AgonistsVasoconstrictor AgentsReceptors, Adrenergic, alpha-1Medication ReconciliationMedication SystemsReceptors, Adrenergic, alphaEphedrineMedication Systems, HospitalPrazosinVasoconstrictionAdrenergic alpha-AntagonistsBlood PressureSympathomimeticsMydriaticsAorta, ThoracicAdrenergic alpha-1 Receptor AntagonistsAdrenergic AgonistsBaroreflexDose-Response Relationship, DrugClonidinePrescription DrugsIsoproterenolNorepinephrineNitroprussideVasodilator AgentsSelf MedicationDrug PrescriptionsReceptors, AdrenergicPolypharmacyPatient ComplianceTropicamideMuscle, Smooth, VascularDrug TherapyAntihypertensive AgentsMuscle ContractionPsychotropic DrugsMethoxamineMesenteric ArteriesVasodilationPropranololHeart RateAnesthesia, ObstetricalPressoreceptorsRats, Sprague-DawleyPotassium ChlorideAnesthesia, SpinalAntipsychotic AgentsHypotensionRats, WistarPhentolamineNonprescription DrugsEpinephrineHypertensionDrug UtilizationSympathetic Nervous SystemAcetylcholineAdrenergic beta-AgonistsYohimbineTreatment OutcomeNitric OxideDrug-Related Side Effects and Adverse ReactionsDioxanesPharmacistsClinical Pharmacy Information SystemsUnited StatesMuscle RelaxationPharmaceutical PreparationsDrug InteractionsTime FactorsAortaArteriesRats, Inbred StrainsAdrenergic beta-AntagonistsCalciumEndothelium, VascularAntidepressive AgentsMedical Order Entry SystemsDrug Therapy, Computer-AssistedDouble-Blind MethodRabbitsNG-Nitroarginine Methyl EsterPupilVasopressinsTailElectronic PrescribingEnzyme InhibitorsQuinoxalinesPhenoxybenzamineNasal DecongestantsDrug CostsProspective StudiesRetrospective StudiesOxymetazolineRegional Blood FlowInsurance, Pharmaceutical ServicesAnti-Asthmatic Agents