FetusSurgical Procedures, ElectivePregnancyGestational AgeAortic Aneurysm, AbdominalEmergenciesStentsPostoperative ComplicationsCampylobacter fetusTreatment OutcomeRetrospective StudiesBlood Vessel Prosthesis ImplantationTritrichomonas foetusProspective StudiesBlood Vessel ProsthesisInfant, NewbornTime FactorsFollow-Up StudiesFetal DiseasesUltrasonography, PrenatalReoperationRecurrenceRisk FactorsMaternal-Fetal ExchangeFetal HeartPrenatal DiagnosisFetal Growth RetardationPlacentaPregnancy Trimester, SecondAbortion, VeterinaryHeart Rate, FetalSheepFetal DevelopmentFetal DeathEmbryonic and Fetal DevelopmentAmniotic FluidHydrops FetalisUmbilical ArteriesFetal WeightFetal HypoxiaTritrichomonasPregnancy Trimester, ThirdPregnancy Trimester, FirstFetal BloodCrown-Rump LengthAmniocentesisDown SyndromeFetal MovementFetal MonitoringPregnancy, AnimalTrisomyProtozoan Infections, AnimalHernia, DiaphragmaticNuchal Translucency MeasurementAbortion, EugenicChromosome DisordersPlacental InsufficiencyHeart Defects, CongenitalProtozoan InfectionsOligohydramniosUltrasonography, DopplerCordocentesisAbnormalities, Drug-InducedTrichomonasPregnancy ComplicationsFetal DistressChorionic Villi SamplingBlood Transfusion, IntrauterineFetal ViabilityUmbilical CordBlood Flow VelocityAbnormalities, MultipleCampylobacter InfectionsFetal ResorptionNeckKaryotypingCongenital AbnormalitiesUltrasonography, Doppler, PulsedPlacental CirculationUterusGastroschisisCattle DiseasesAbortion, TherapeuticNasal BoneCardiotocographyRh IsoimmunizationFetoscopyCampylobacterFetal TherapiesSpina Bifida CysticaPregnancy in DiabeticsFetal Organ MaturityLitter SizeDuctus ArteriosusErythroblastosis, FetalPolyhydramniosSheep, DomesticPregnancy, High-RiskAnimals, NewbornPulsatile Flow