HydrocephalusCerebral VentriclesSubarachnoid HemorrhageSubarachnoid SpaceCerebrospinal FluidHydrocephalus, Normal PressureCerebrospinal Fluid ShuntsInjections, IntraventricularCerebral HemorrhageFourth VentricleVentriculoperitoneal ShuntCisterna MagnaVentriculostomyHemorrhageVasospasm, IntracranialCerebral AqueductThird VentricleCerebral ArteriesCerebrospinal Fluid ProteinsHeart VentriclesBrainEpendymaCerebrospinal Fluid PressureShiveringIntracranial AneurysmLateral VentriclesIntracranial HemorrhagesCerebral VentriculographySpinal PunctureCerebral AngiographyInjectionsCerebral InfarctionIntracranial PressurePneumoencephalographyCerebrovascular CirculationCerebral Ventricle NeoplasmsAneurysm, RupturedNeuroendoscopyTomography, X-Ray ComputedBody TemperatureChoroid PlexusMagnetic Resonance ImagingHypothalamusMeningitisPempidineArachnoidRetinal HemorrhageTime FactorsHypnosis, AnestheticBasilar ArteryCatsBody Temperature RegulationPhysostigmineCerebrospinal Fluid RhinorrheaBrain IschemiaMiddle Cerebral ArteryHexamethonium CompoundsDogsTranylcypromineConsciousnessCerebral PalsyCerebral VeinsBrain DiseasesBlood PressurePerfusionSerotoninTuberculosis, MeningealPostpartum HemorrhageMeningesNeurosurgical ProceduresRats, Sprague-DawleyHistamine AgentsRupture, SpontaneousPyrogensNorepinephrineTreatment OutcomeVitreous HemorrhageGastrointestinal HemorrhageInjections, IntravenousIschemic Attack, TransientRats, WistarCraniotomyIntracranial HypertensionMeningomyeloceleBrain EdemaHematoma, SubduralPhentolamineEye HemorrhageDrinkingLysergic Acid DiethylamideInfarction, Middle Cerebral ArterySpinal DysraphismHematomaRetrospective StudiesInfant, NewbornDisease Models, AnimalMeningitis, BacterialMalaria, CerebralGlasgow Outcome ScaleArachnoid Cysts