CraniotomySuperficial Back MusclesObserver VariationNeurosurgical ProceduresPneumocephalusReproducibility of ResultsFrontal BoneHematoma, Subdural, AcuteTomography, X-Ray ComputedTrephiningHead Injuries, PenetratingTreatment OutcomeBrain NeoplasmsDelayed Emergence from AnesthesiaHematoma, SubduralMagnetic Resonance ImagingIntracranial AneurysmDura MaterMeningeal NeoplasmsSurgical Fixation DevicesSupratentorial NeoplasmsFrontal SinusMeningiomaIntraoperative ComplicationsArachnoid CystsMicrosurgerySubdural SpaceLenses, IntraocularGlasgow Coma ScaleRetrospective StudiesHematoma, Epidural, CranialHematoma, Subdural, ChronicCerebrospinal Fluid RhinorrheaTemporal BoneTime FactorsCranial Fossa, AnteriorFourth VentricleStereotaxic TechniquesBrain AbscessNeurosurgeryPostoperative ComplicationsHematoceleSurgical InstrumentsCerebellar DiseasesSurgical FlapsVentriculostomyProspective StudiesSkull BaseConsciousness MonitorsBrain InjuriesCranial Nerve NeoplasmsSkull FracturesCerebral AngiographySensitivity and SpecificityAneurysm, RupturedSubarachnoid HemorrhageSkull Base NeoplasmsConscious SedationCerebral VeinsDecompression, SurgicalIntracranial HemorrhagesBrazilCraniopharyngiomaBrain DiseasesOrbitAnterior Cerebral ArteryCranial Fossa, MiddleSkullFollow-Up StudiesNeuroendoscopyIntracranial Hemorrhage, HypertensiveMonitoring, IntraoperativeIndia