Subarachnoid HemorrhageVasospasm, IntracranialSubarachnoid SpaceBrain IschemiaIntracranial AneurysmCerebral HemorrhageCerebral ArteriesAneurysm, RupturedIschemic Attack, TransientIschemiaCerebral AngiographyCerebral InfarctionCerebrovascular CirculationHemorrhageBasilar ArteryBrainInfarction, Middle Cerebral ArteryTomography, X-Ray ComputedIntracranial HemorrhagesMyocardial IschemiaMiddle Cerebral ArteryNeuroprotective AgentsRupture, SpontaneousSubarachnoid Hemorrhage, TraumaticHydrocephalusBrain EdemaSpinal PunctureIntracranial PressureGlasgow Outcome ScaleTime FactorsDisease Models, AnimalReperfusion InjuryCisterna MagnaNimodipineReperfusionCerebrovascular DisordersRats, Sprague-DawleyPregnatrienesSurgical InstrumentsAngiography, Digital SubtractionGerbillinaeMagnetic Resonance ImagingStrokeEmbolization, TherapeuticVentriculostomyRetinal HemorrhageTreatment OutcomeProspective StudiesCerebral VeinsVertebral ArteryHematoma, SubduralGlasgow Coma ScaleBlood-Brain BarrierBrain InfarctionNeurosurgical ProceduresVitreous HemorrhageCerebral VentriclesCerebral PalsyRats, WistarCraniotomyAcute DiseaseArachnoidNeurologic ExaminationPostpartum HemorrhageIntracranial Embolism and ThrombosisRetrospective StudiesPosterior Cerebral ArteryIntracranial Hemorrhage, HypertensiveHeadacheCortical Spreading DepressionUltrasonography, Doppler, TranscranialIntracranial HypertensionPia MaterBrain InjuriesVertebral Artery DissectionIntracranial Arteriovenous MalformationsGastrointestinal HemorrhageNeuronsDogsBlood PressureHypoxia, BrainHematomaCerebral CortexCerebral VentriculographyAnterior Cerebral ArteryRisk FactorsBlood Flow VelocityFollow-Up StudiesHeadache Disorders, PrimaryMagnetic Resonance AngiographyCerebrospinal FluidLaser-Doppler FlowmetryVentriculoperitoneal ShuntEye HemorrhageVasoconstrictionIschemic PreconditioningNeurosurgeryComaBrain DiseasesOxygen