Administration, IntranasalRhinitis, Allergic, PerennialChenopodium albumAdrenal Cortex HormonesAnti-Allergic AgentsRhinitisRhinitis, Allergic, SeasonalSinusitisPregnadienediolsHistamine AntagonistsNasal PolypsPregnancyAndrostadienesPregnancy ComplicationsPregnancy OutcomePregnancy, AnimalPregnancy, EctopicGlucocorticoidsPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy RateAdministration, InhalationPregnancy TrimestersPregnancy Complications, CardiovascularPregnancy TestsAnti-Inflammatory AgentsPregnancy, MultiplePrednisolonePregnancy in DiabeticsPregnancy Trimester, SecondPregnancy, TubalMethylprednisoloneAsthmaPregnancy Complications, NeoplasticBeclomethasoneAnti-Asthmatic AgentsPregnancy in AdolescenceBudesonidePregnancy Complications, InfectiousAbortion, SpontaneousGestational AgeNasal MucosaPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedInfant, NewbornBetamethasonePregnancy Complications, HematologicAdministration, TopicalLungTreatment OutcomePregnenedionesTriamcinoloneMice, Inbred BALB CPregnancy, ProlongedDexamethasonePre-EclampsiaPregnancy, TwinBronchodilator AgentsPlacentaFluocinolone AcetonidePrenatal CareTime FactorsFetal DeathImmunity, MucosalHydrocortisoneAbortion, InducedPregnancy, AbdominalUterusTriamcinolone AcetonideDrug Therapy, CombinationPregnancy Complications, ParasiticRetrospective StudiesPregnancy MaintenanceProspective StudiesPrenatal Exposure Delayed EffectsUltrasonography, PrenatalEmbryo ImplantationMaternal-Fetal ExchangeInjections, Intra-ArticularDouble-Blind MethodImmunosuppressive AgentsEmbryo TransferInjections, IntramuscularAdministration, OralFertilization in VitroPrednisonePremature BirthNasal CavityParityImmunizationBirth WeightRisk FactorsProgesteroneAdjuvants, ImmunologicNasal SpraysMethylprednisolone HemisuccinatePregnancy Reduction, MultifetalObstetric Labor, Premature