AmniocentesisSpinal DysraphismSpina Bifida OccultaSpina Bifida CysticaMeningomyelocelePuncturesAnencephalySpinal PunctureNeural Tube DefectsAmniotic FluidChorionic Villi SamplingPrenatal DiagnosisPregnancyFourth VentricleFetal DiseasesHydrocephalusPregnancy Trimester, SecondUltrasonography, PrenatalDown SyndromeEncephaloceleMaternal AgeChromosome DisordersCongenital AbnormalitiesPost-Dural Puncture Headachealpha-FetoproteinsGestational AgeCordocentesisCerebrospinal Fluid ShuntsAbortion, TherapeuticInfant, NewbornIndividuationPregnancy Trimester, FirstFetal DeathRh IsoimmunizationPregnancy, High-RiskAbortion, SpontaneousAbortion, InducedTest Anxiety ScaleEstriolUrinary Bladder, NeurogenicChorioamnionitisFolic AcidAbnormalities, Severe Teratoid5,10-Methylenetetrahydrofolate Reductase (FADH2)Genetic CounselingAbortion, EugenicTrisomyKaryotypingAcrocallosal SyndromeCustodial CareNeural TubeLymphangioma, CysticChromosome AberrationsLumbosacral RegionAbnormalities, MultipleCrown-Rump LengthSex Chromosome AberrationsArnold-Chiari MalformationMeningoceleIatrogenic DiseaseBiological DressingsPrenatal CareFetal Membranes, Premature RuptureMethylenetetrahydrofolate Dehydrogenase (NAD+)Pregnancy, TwinSpineFetusVentriculoperitoneal ShuntNeedlesObstetric Labor, PrematurePregnancy OutcomeNicotinamide N-MethyltransferasePregnant WomenSick RoleFetoscopyDrainage, SanitaryRetrospective StudiesSacrococcygeal RegionAmnionHypertrichosisAneuploidyErythroblastosis, FetalDependent AmbulationUrinary IncontinenceMaineCase-Control StudiesIntermittent Urethral CatheterizationLatexLatex HypersensitivitySacrumFetal Organ MaturityTwinsFoot Deformities, CongenitalPregnancy ComplicationsBlood Transfusion, IntrauterineCampingLower Gastrointestinal TractSepsisProspective StudiesBlood Patch, Epidural