OligohydramniosPlasma VolumePolyhydramniosAmniotic FluidBlood VolumeExtracellular SpaceBody FluidsExtracellular FluidFluid ShiftsWater-Electrolyte BalanceIsotonic SolutionsBody WaterFluid TherapyBody Fluid CompartmentsAbsorptionSodiumBlood Volume DeterminationWater-Electrolyte ImbalanceAmputation StumpsUltrasonography, PrenatalDehydrationElectric ImpedanceExtravascular Lung WaterDiuresisStroke VolumeInulinLung Volume MeasurementsSodium ChloridePregnancyProsthesis FittingLymphatic SystemHematocritHydrostatic PressureOsmolar ConcentrationGestational AgePlasma SubstitutesBlood PressureNatriuresisRadioisotope Dilution TechniqueEdemaElectrolytesDye Dilution TechniqueMagnetic Resonance ImagingOsmosisOrgan SizeKidneyUrinePressureAlkalosisKidney Tubules, DistalTime FactorsErythrocyte VolumeAstronautsWater DeprivationHypovolemiaChromium RadioisotopesWeightlessnessImaging, Three-DimensionalRehydration SolutionsGlomerular Filtration RateHypernatremiaFurosemideReproducibility of ResultsCapillary PermeabilityBody Surface AreaOsmotic PressureDogsHemodynamicsHypertonic SolutionsHyponatremiaFetofetal TransfusionThirstAldosteroneSheepDiureticsArtificial LimbsCerebrospinal FluidPotassiumAmniocentesisDrinkingForced Expiratory VolumeWaterReninPulmonary EdemaPeritoneal DialysisUrinationReference ValuesAscitesMannitolCerebrospinal Fluid PressureNephronsProspective StudiesChorionChloridesInfusions, ParenteralLungAlbuminsEpithelial Sodium ChannelsKidney TubulesUltrafiltration