Cerebral VentriclesSubarachnoid HemorrhageSubarachnoid SpaceCerebrospinal FluidInjections, IntraventricularCerebral HemorrhageCisterna MagnaFourth VentricleHemorrhageVasospasm, IntracranialCerebral ArteriesHeart VentriclesCerebrospinal Fluid ProteinsShiveringBrainHydrocephalusIntracranial AneurysmIntracranial HemorrhagesCerebral AngiographyInjectionsCerebral InfarctionLateral VentriclesBody TemperatureCerebrovascular CirculationAneurysm, RupturedEpendymaHypothalamusThird VentriclePempidineSpinal PunctureChoroid PlexusTomography, X-Ray ComputedCatsRetinal HemorrhageCerebral Ventricle NeoplasmsBasilar ArteryHypnosis, AnestheticBody Temperature RegulationPhysostigmineCerebrospinal Fluid RhinorrheaTime FactorsCerebrospinal Fluid PressureMiddle Cerebral ArteryCerebrospinal Fluid ShuntsHexamethonium CompoundsBrain IschemiaTranylcypromineIntracranial PressureConsciousnessDogsCerebral PalsyMagnetic Resonance ImagingMeningitisPerfusionBlood PressureSerotoninPostpartum HemorrhageArachnoidRats, Sprague-DawleyHistamine AgentsPyrogensCerebral VentriculographyNorepinephrineCerebral VeinsVitreous HemorrhageGastrointestinal HemorrhageVentriculostomyInjections, IntravenousRats, WistarIschemic Attack, TransientRupture, SpontaneousPhentolamineEye HemorrhageDrinkingInfarction, Middle Cerebral ArteryLysergic Acid DiethylamideMalaria, CerebralTreatment OutcomeBrain DiseasesHeart RateParasympathomimeticsRabbitsBrain EdemaVentriculoperitoneal ShuntCerebrovascular DisordersPentobarbitalMeningesCraniotomyHematomaReserpineFeverBlood-Brain BarrierHematoma, SubduralIntracranial Hemorrhage, HypertensiveDisease Models, AnimalNeurosurgical ProceduresGlasgow Outcome ScaleAtropineSubarachnoid Hemorrhage, TraumaticProspective Studies