Subarachnoid HemorrhageVasospasm, IntracranialBasilar ArterySubarachnoid SpaceIntracranial AneurysmCerebral AngiographyCerebral ArteriesAneurysm, RupturedIschemic Attack, TransientCisterna MagnaCoronary VasospasmCerebral HemorrhagePapaverineCerebrovascular CirculationNimodipineHemorrhageTomography, X-Ray ComputedRupture, SpontaneousCerebral InfarctionUltrasonography, Doppler, TranscranialMiddle Cerebral ArteryBrain IschemiaAngiography, Digital SubtractionVasoconstrictionBrainVentriculostomyIntracranial HemorrhagesDisease Models, AnimalGlasgow Outcome ScaleDogsHydrocephalusInjections, Intra-ArterialSubarachnoid Hemorrhage, TraumaticTreatment OutcomeSpinal PunctureIntracranial PressureVasodilator AgentsGlasgow Coma ScaleNicardipineInfusions, Intra-Arterial1-(5-Isoquinolinesulfonyl)-2-MethylpiperazineCerebrospinal FluidPregnatrienesTime FactorsSurgical InstrumentsEmbolization, TherapeuticSpasmInjections, IntraventricularOxyhemoglobinsChlorobutanolProspective StudiesRabbitsCraniotomyVertebral ArteryBlood Flow VelocityRetrospective StudiesAngiographyRetinal HemorrhageNeurosurgical ProceduresCerebrovascular DisordersCerebral VeinsMuscle, Smooth, VascularHematoma, SubduralPipecolic AcidsBrain EdemaMagnetic Resonance ImagingVitreous HemorrhageCerebral PalsyPosterior Cerebral ArteryRats, Sprague-DawleyAnterior Cerebral ArteryCerebral VentriclesIntracranial Arteriovenous MalformationsIntracranial HypertensionHeadacheArachnoidPostpartum HemorrhageHeadache Disorders, PrimaryInjectionsIntracranial Hemorrhage, HypertensiveHematomaSerotoninVertebral Artery DissectionCalcium Channel BlockersDioxanesPerfusion ImagingGastrointestinal HemorrhageBrain Injuriesrho-Associated KinasesCortical Spreading DepressionEndothelin-1Consciousness DisordersBlood PressureStrokeCerebral VentriculographyVasoconstrictor AgentsAcute DiseaseInfarction, Middle Cerebral ArteryMagnesium SulfatePia Mater