TerbutalineAdrenergic beta-AgonistsTocolytic AgentsNebulizers and VaporizersBronchodilator AgentsAdministration, InhalationBudesonideAdrenergic beta-2 Receptor AgonistsAerosolsButoxamineEthanolaminesPeak Expiratory Flow RatePregnenedionesAsthmaAlbuterolMetaproterenolFenoterolReceptors, Adrenergic, beta-2Forced Expiratory VolumeButylaminesDelivery of Health CarePrenalterolHealth PersonnelMaximal Expiratory Flow RateCapillary Leak SyndromeMagnetocardiographyDouble-Blind MethodChlorofluorocarbonsPowdersReceptors, Adrenergic, beta