Blood Flow VelocityEchocardiography, DopplerCoronary CirculationEchocardiographyPeak Expiratory Flow RateRegional Blood FlowUltrasonography, Doppler, TranscranialRheologyCerebrovascular CirculationAsthmaPulsatile FlowMiddle Cerebral ArteryUltrasonography, DopplerUltrasonography, Doppler, ColorOphthalmic ArteryDiastoleCerebral ArteriesUltrasonography, Doppler, PulsedBlood PressureHemodynamicsHyperemiaForced Expiratory Flow RatesEchocardiography, Doppler, PulsedRespiratory Function TestsFlow CytometryUmbilical ArteriesLaser-Doppler FlowmetryVascular ResistanceSpirometryReproducibility of ResultsReference ValuesHeart RateRetinal ArteryUltrasonography, PrenatalTime FactorsMitral ValveBronchial Provocation TestsProspective StudiesEchoencephalographyEchocardiography, Doppler, ColorCoronary VesselsPulmonary VentilationMicrocirculationCiliary ArteriesSystoleModels, CardiovascularAtrial Function, LeftForced Expiratory VolumeHypocapniaUltrasonographySensitivity and SpecificityHeart Rate, FetalPlacental CirculationBronchodilator AgentsPrintingAlbuterolLung Diseases, ObstructiveArteriesAsthma, OccupationalPredictive Value of TestsTerbutalineDouble-Blind MethodAdministration, InhalationCarbon DioxideDoppler EffectVentricular Function, LeftObserver VariationHyperventilationHemorheologyVital CapacityGestational AgeCarotid Artery, InternalAnalysis of VarianceEchocardiography, TransesophagealCoughMonitoring, AmbulatoryBudesonideFlowmetersRespiratory SoundsPregnancyFetal HeartTracheotomyAnterior Cerebral ArteryRespirationFetal Growth RetardationBeclomethasoneVasodilator AgentsPosterior Cerebral ArteryBiomechanical PhenomenaMonitoring, PhysiologicCardiac OutputHydrodynamicsSelf CareIntracranial PressureEquipment DesignUltrasonography, Doppler, DuplexNebulizers and VaporizersTreatment OutcomeLungMyocardial Contraction