Biomaterial Database

Metered dose inhaler induced bronchospasm in asthmatic patients. 1985

J Yarbrough, and L E Mansfield, and S Ting

Beta-adrenergic agonists in metered dose inhalers (MDIs) are used extensively in the treatment of asthma. Previously we reported that 23 of 1450 (1.6%) of our asthmatic patients experienced immediate bronchoconstriction after using MDI-albuterol. In this study we investigated immediate bronchoconstriction after use of MDI-metaproterenol and after placebo-inhaler with "inert ingredients" only. Results suggest that those patients who complained of chest tightness or lack of relief following the use of MDI beta-adrenergic agonists are having true bronchoconstriction. The bronchoconstrictive response is most likely caused by the propellants or the other inert ingredients contained in these MDIs.

UI	MeSH Term	Description	Entries
D009921	Metaproterenol	A beta-2 adrenergic agonist used in the treatment of ASTHMA and BRONCHIAL SPASM.	Orciprenaline,Alotec,Alupent,Astmopent,Metaprel,Metaproterenol Polistirex,Metaproterenol Sulfate,Orciprenaline Sulfate,Polistirex, Metaproterenol
D001986	Bronchial Spasm	Spasmodic contraction of the smooth muscle of the bronchi.	Bronchospasm,Bronchial Spasms,Bronchospasms,Spasm, Bronchial,Spasms, Bronchial
D005541	Forced Expiratory Volume	Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.	Forced Vital Capacity, Timed,Timed Vital Capacity,Vital Capacity, Timed,FEVt,Capacities, Timed Vital,Capacity, Timed Vital,Expiratory Volume, Forced,Expiratory Volumes, Forced,Forced Expiratory Volumes,Timed Vital Capacities,Vital Capacities, Timed,Volume, Forced Expiratory,Volumes, Forced Expiratory
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000281	Administration, Intranasal	Delivery of medications through the nasal mucosa.	Drug Administration, Intranasal,Administration, Intranasal Drug,Administration, Nasal,Intranasal Administration,Intranasal Drug Administration,Administrations, Intranasal,Administrations, Intranasal Drug,Administrations, Nasal,Drug Administrations, Intranasal,Intranasal Administrations,Intranasal Drug Administrations,Nasal Administration,Nasal Administrations
D000335	Aerosol Propellants	Compressed gases or vapors in a container which, upon release of pressure and expansion through a valve, carry another substance from the container. They are used for cosmetics, household cleaners, and so on. Examples are BUTANES; CARBON DIOXIDE; FLUOROCARBONS; NITROGEN; and PROPANE. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Propellants, Aerosol
D000336	Aerosols	Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.	Aerosol
D001249	Asthma	A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).	Asthma, Bronchial,Bronchial Asthma,Asthmas