HeartburnPregnancy TrimestersPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy Trimester, SecondPregnancyPregnancy ComplicationsPregnancy OutcomeGastroesophageal RefluxPregnancy, AnimalPregnancy, EctopicAntacidsEsophagitisAnti-Ulcer AgentsRanitidinePregnancy Complications, CardiovascularEsophagitis, PepticHistamine H2 AntagonistsGestational AgeProton Pump InhibitorsPregnancy RateUltrasonography, PrenatalAbortion, SpontaneousPregnancy in DiabeticsPregnancy Complications, NeoplasticPregnancy Complications, InfectiousPregnancy, MultipleEsomeprazoleEsophageal pH MonitoringOmeprazolePregnancy TestsEsophagusLaryngopharyngeal RefluxEsophagoscopyPlacenta2-PyridinylmethylsulfinylbenzimidazolesPregnancy, TubalPre-EclampsiaInfant, NewbornManometryMorning SicknessNizatidinePregnancy in AdolescenceDexlansoprazolePregnancy, High-RiskPregnancy ProteinsAbortion, InducedGastric Acidity DeterminationHernia, HiatalSilicic AcidCisapridePregnancy Complications, HematologicTrophoblastsHydrochloric AcidFundoplicationFetal DeathRabeprazoleFetal DiseasesDiagnostic Techniques, Digestive SystemPrenatal DiagnosisGastric AcidPregnancy, UnplannedAluminum HydroxideDeglutition DisordersDyspepsiaMagnesium HydroxidePrenatal CareLansoprazolePregnancy, UnwantedMaternal-Fetal ExchangeEsophageal AchalasiaChorionic VilliDeciduaFetusFetal DevelopmentFetal Growth RetardationAbnormalities, Drug-InducedPregnancy, TwinBirth WeightProspective StudiesPrenatal Exposure Delayed EffectsUterusDouble-Blind MethodLaryngitisPregnancy Complications, ParasiticAmniotic FluidMaternal AgeAbortifacient Agents, NonsteroidalParityHypertension, Pregnancy-InducedMaternal ExposureCrown-Rump LengthPregnancy, ProlongedPremature BirthTreatment OutcomePregnancy MaintenancePregnancy, AbdominalEndoscopy, GastrointestinalCesarean SectionChorionic Gonadotropin, beta Subunit, Human