Neurosurgical ProceduresCraniotomyEmbolism, AirNeurosurgeryNeuronavigationAmrinoneAnestheticsRewarmingIntraoperative PeriodMeningitis, BacterialCentral Nervous System InfectionsAnesthetics, LocalMonitoring, IntraoperativeAnesthetics, InhalationSurgical Wound InfectionPostoperative ComplicationsAnesthetics, GeneralBrain NeoplasmsAnesthetics, IntravenousMagnetic Resonance ImagingIsofluraneHalothaneAnesthetics, CombinedEnfluraneLidocaineMethyl EthersAnesthesiaAnesthesia, LocalPropofolAnesthetics, DissociativeAnesthesia, GeneralMethoxyfluraneBupivacaineAnesthesia, InhalationAnesthesia, DentalBenzocaineKetamineTetracaineNerve BlockPrilocaineNitrous OxideThiopentalEtomidateProcaineEtherAnesthesiologyPentobarbitalDibucaineMepivacaineAnesthesia, Intravenous