CraniotomyPropofolAnesthetics, IntravenousNeurosurgical ProceduresPneumocephalusConscious SedationPostoperative ComplicationsHypnotics and SedativesFrontal BoneMonitoring, IntraoperativeHematoma, Subdural, AcuteAnesthesia, GeneralTrephiningConsciousness MonitorsAnesthesia Recovery PeriodAnesthesiaTreatment OutcomeAnesthetics, CombinedBrain NeoplasmsDelayed Emergence from AnesthesiaFentanylHead Injuries, PenetratingIntracranial AneurysmDura MaterHematoma, SubduralMicrosurgeryMeningeal NeoplasmsSupratentorial NeoplasmsTomography, X-Ray ComputedSurgical Fixation DevicesMeningiomaFrontal SinusAnesthetics, InhalationThiopentalArachnoid CystsMethyl EthersRetrospective StudiesSubdural SpaceBariatric SurgeryProspective StudiesMagnetic Resonance ImagingGlasgow Coma ScaleHematoma, Epidural, CranialElectroencephalographyCerebrospinal Fluid RhinorrheaSurgical InstrumentsNeurosurgeryHematoma, Subdural, ChronicAlfentanilTemporal BoneIsofluraneStereotaxic TechniquesSurgical FlapsDeep SedationMidazolamGeneral SurgeryTime FactorsCranial Fossa, AnteriorDecompression, SurgicalPreoperative CareFourth VentricleBrain AbscessPiperidinesThoracic SurgeryEtomidateAmbulatory Surgical ProceduresCardiac Surgical ProceduresSkull BaseHematoceleIntraoperative ComplicationsMethohexitalVentriculostomyAnesthetics, GeneralSurgery, Computer-AssistedCerebellar DiseasesBrain InjuriesPostoperative PeriodFollow-Up StudiesIntraoperative CareAneurysm, RupturedAnestheticsCerebral AngiographySubarachnoid HemorrhageSkull FracturesCranial Nerve NeoplasmsSkull Base NeoplasmsNitrous OxideBrain DiseasesReoperationOrbitCerebral VeinsIntracranial HemorrhagesSurgery, PlasticSurgical Procedures, Minimally InvasiveNeuroendoscopyDouble-Blind MethodPostoperative CareAnesthetics, LocalDose-Response Relationship, DrugSkull