Subarachnoid HemorrhageVasospasm, IntracranialSubarachnoid SpaceIntracranial AneurysmCerebral HemorrhageAneurysm, RupturedHemorrhageCerebral AngiographyBasilar ArteryTomography, X-Ray ComputedIntracranial HemorrhagesRupture, SpontaneousCerebral ArteriesSubarachnoid Hemorrhage, TraumaticSpinal PunctureHydrocephalusGlasgow Outcome ScaleCisterna MagnaIntracranial PressureIschemic Attack, TransientCerebrovascular CirculationBrain IschemiaSurgical InstrumentsRetinal HemorrhageVentriculostomyNimodipineAngiography, Digital SubtractionEmbolization, TherapeuticTreatment OutcomeHematoma, SubduralVitreous HemorrhageProspective StudiesNeurosurgical ProceduresGlasgow Coma ScaleCerebral InfarctionTime FactorsVertebral ArteryRetrospective StudiesPostpartum HemorrhageCraniotomyBrainPregnatrienesArachnoidGastrointestinal HemorrhageHeadacheIntracranial Hemorrhage, HypertensiveVertebral Artery DissectionMagnetic Resonance ImagingCerebrovascular DisordersHematomaCerebral VentriculographyEye HemorrhageVentriculoperitoneal ShuntCerebral VentriclesHeadache Disorders, PrimaryRisk FactorsFatal OutcomeCerebrospinal FluidIntracranial Arteriovenous MalformationsNeurosurgerySensitivity and SpecificityFollow-Up StudiesUltrasonography, Doppler, TranscranialIntracranial HypertensionBrain EdemaAcute DiseaseConsciousness DisordersPutaminal HemorrhageIncidencePredictive Value of TestsCortical Spreading DepressionDisease Models, AnimalPrognosisMeningesMiddle Cerebral ArteryStrokePosterior Cerebral ArteryRecurrenceHemosiderinBrain InjuriesMagnesium SulfateCerebral AqueductComaAngiographyVasoconstrictionAneurysmPapaverineNeurologic ExaminationSeverity of Illness IndexDura MaterAminocaproatesBasal Ganglia HemorrhageCerebral Hemorrhage, TraumaticHematoma, Subdural, IntracranialDelayed DiagnosisDogsCohort StudiesAge FactorsTranexamic AcidAnterior Cerebral Artery