CraniotomyPropofolAnesthetics, IntravenousNeurosurgical ProceduresPneumocephalusConscious SedationHypnotics and SedativesFrontal BoneHematoma, Subdural, AcuteTrephiningConsciousness MonitorsAnesthesia, GeneralMonitoring, IntraoperativeDelayed Emergence from AnesthesiaHead Injuries, PenetratingBrain NeoplasmsAnesthetics, CombinedHematoma, SubduralIntracranial AneurysmSupratentorial NeoplasmsAnesthesia Recovery PeriodDura MaterFentanylSurgical Fixation DevicesMeningeal NeoplasmsAnesthesiaFrontal SinusThiopentalMeningiomaArachnoid CystsAnesthetics, InhalationSubdural SpaceMicrosurgeryMethyl EthersGlasgow Coma ScaleAlfentanilHematoma, Epidural, CranialTomography, X-Ray ComputedHematoma, Subdural, ChronicDeep SedationCerebrospinal Fluid RhinorrheaElectroencephalographyTemporal BoneIsofluraneCranial Fossa, AnteriorFourth VentricleMidazolamStereotaxic TechniquesPostoperative ComplicationsMagnetic Resonance ImagingBrain AbscessNeurosurgeryHematoceleEtomidatePiperidinesSurgical InstrumentsMethohexitalCerebellar DiseasesAnesthetics, GeneralBrain InjuriesVentriculostomySurgical FlapsSkull BaseCranial Nerve NeoplasmsSkull FracturesCerebral AngiographySubarachnoid HemorrhageAneurysm, RupturedAnestheticsSkull Base NeoplasmsDecompression, SurgicalCerebral VeinsIntracranial HemorrhagesBrain DiseasesCraniopharyngiomaNitrous OxideAnterior Cerebral ArteryOrbitConsciousnessCranial Fossa, MiddleNeuroendoscopyIntracranial Hemorrhage, HypertensiveSkullDose-Response Relationship, Drug