PuncturesSpinal PuncturePost-Dural Puncture HeadacheNeedlesSepsisSensitivity and SpecificityBlood Patch, EpiduralCecumDiagnostic ErrorsDiagnostic Tests, RoutineAtrial SeptumDiagnostic Techniques and ProceduresHeadacheWounds, PenetratingDiagnostic ImagingFoot InjuriesLarynx, ArtificialCatheterization, PeripheralLigationDura MaterHemostatic TechniquesCerebrospinal FluidMeningitisReagent Kits, DiagnosticTomography, X-Ray ComputedFluoroscopyAnesthesia, SpinalReproducibility of ResultsRetrospective StudiesGloves, SurgicalProspective StudiesPredictive Value of TestsMolecular Diagnostic TechniquesROC CurveUltrasonography, InterventionalMeningitis, BacterialDiagnostic and Statistical Manual of Mental DisordersTreatment OutcomeDiagnostic ServicesBlood Specimen CollectionJugular VeinsRadiography, InterventionalBiopsy, NeedleTime FactorsAnesthesia, EpiduralAxillary VeinMagnetic Resonance ImagingCatheterizationCerebrospinal Fluid PressureSpeech, AlaryngealFemoral ArteryCatheterization, Central VenousPeritonitisMyelographyCardiac CatheterizationNeurosyphilisBiological MarkersEpidural SpaceBiopsySubarachnoid HemorrhageNerve BlockSeizures, FebrileIatrogenic DiseaseBloodlettingDiagnosisAnesthesia, ObstetricalLaryngectomyFeasibility StudiesClinical Laboratory TechniquesSubarachnoid SpaceUltrasonographyPhlebotomyGroinPolymerase Chain ReactionContrast MediaFollow-Up StudiesIntracranial HypotensionBiopsy, Fine-NeedleEquipment DesignAnalgesia, EpiduralNeedlestick InjuriesInfant, NewbornDisease Models, AnimalMorganella morganiiProsthesis ImplantationAnalgesia, ObstetricalEnzyme-Linked Immunosorbent AssayWounds, StabHeelHematomaAngiographyPseudotumor CerebriCerebrospinal Fluid ProteinsParacentesisHeart SeptumPrognosisFalse Positive ReactionsPregnancyMeningitis, FungalBacterial Infections