PapaverineVasospasm, IntracranialSubarachnoid HemorrhageBasilar ArteryCerebral ArteriesIschemic Attack, TransientCerebral AngiographyCisterna MagnaIntracranial AneurysmCoronary VasospasmCerebrovascular CirculationAneurysm, RupturedNimodipineVasodilator AgentsMiddle Cerebral ArteryCerebral InfarctionInjections, Intra-ArterialInfusions, Intra-ArterialUltrasonography, Doppler, TranscranialVasoconstrictionChlorobutanolDogsBrainSubarachnoid SpaceDisease Models, Animal1-(5-Isoquinolinesulfonyl)-2-MethylpiperazineNicardipineBrain IschemiaCerebral PalsyBlood Flow VelocityAngiography, Digital SubtractionInjections, IntraventricularOxyhemoglobinsRabbitsMuscle, Smooth, VascularVentriculostomySpasmRupture, SpontaneousTomography, X-Ray ComputedCerebrospinal FluidInjectionsInfusion PumpsTreatment OutcomeTime FactorsPapaverMuscle ContractionPipecolic AcidsCerebral VeinsDose-Response Relationship, DrugInfarction, Middle Cerebral ArteryAngiographyVasodilationMalaria, CerebralRats, Sprague-DawleySerotoninCalcium Channel Blockersrho-Associated KinasesVasoconstrictor AgentsGlasgow Coma ScaleThebaineVascular PatencyThromboxane-A SynthasePenile ErectionCerebral HemorrhageRegional Blood FlowReceptor, PAR-1Endothelin-1MethacrylatesPhosphodiesterase InhibitorsBlood PressureEnzyme InhibitorsHemodynamicsIntracranial PressurePharmaceutical SolutionsRetrospective StudiesAnterior Cerebral ArteryNitric Oxide Synthase Type IIIOpiumErectile DysfunctionInjections, SpinalMyosin Light ChainsHSP72 Heat-Shock ProteinsPenisSerine Proteinase InhibitorsCinnarizineAmidesCarotid ArteriesParasympatholyticsErgonovineAntithrombin III