PregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalCranial SinusesMaxillary SinusParanasal SinusesCavernous SinusSinus of ValsalvaPregnancy, EctopicCarotid SinusFrontal SinusParanasal Sinus DiseasesPregnancy Trimester, FirstSphenoid SinusPregnancy RatePregnancy Trimester, ThirdCoronary SinusPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsSinus Thrombosis, IntracranialPregnancy, MultiplePregnancy in DiabeticsSick Sinus SyndromePregnancy Trimester, SecondPregnancy, TubalEthmoid SinusPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousParanasal Sinus NeoplasmsAbortion, SpontaneousPregnancy ProteinsTachycardia, SinusPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedGestational AgeMaxillary Sinus NeoplasmsPregnancy Complications, HematologicInfant, NewbornPregnancy, ProlongedPre-EclampsiaPregnancy, TwinPlacentaPilonidal SinusFetal DeathTransverse SinusesAbortion, InducedPregnancy, AbdominalUterusSuperior Sagittal SinusUltrasonography, PrenatalPregnancy Complications, ParasiticPregnancy MaintenanceEmbryo ImplantationEmbryo TransferPrenatal CareFertilization in VitroMaternal-Fetal ExchangeParitySinoatrial NodePrenatal Exposure Delayed EffectsBirth WeightPregnancy Reduction, MultifetalMaternal AgeHypertension, Pregnancy-InducedCesarean SectionProspective StudiesFetal Growth RetardationProgesteroneCerebral VeinsPremature BirthSinus Arrest, CardiacFetusInfertility, FemaleAbnormalities, Drug-InducedLactationFetal DevelopmentDeciduaLabor, ObstetricObstetric Labor, PrematureCongenital AbnormalitiesRetrospective StudiesPrenatal DiagnosisTwinsMaternal ExposureChorionic GonadotropinTime FactorsRisk FactorsDiabetes, GestationalAtrial FibrillationFetal DiseasesAbortion, TherapeuticTrophoblastsAbortion, HabitualAbortifacient Agents, NonsteroidalInsemination, ArtificialDelivery, Obstetric