title: Protective effect of albuterol delivered via a spacer device (Babyhaler) against methacholine induced bronchoconstriction in young wheezy children.
abstract: Nine young asthmatic children aged 2-5 years underwent methacholine challenge after placebo or albuterol administered by metered dose inhaler through a spacer device (Babyhaler) with a face mask in a double-blind, cross-over, randomized study. The methacholine challenge was performed using chest auscultation to define the provocative concentration of methacholine that causes wheezing (PCW). The PCW increased from a geometric mean of 0.28 mg/mL after placebo to 3.59 mg/mL after albuterol (P < 0.0001). The protective effect of albuterol against methacholine-induced bronchospasm was 3.7 +/- 1.2 doubling doses. We conclude that administration of drugs from a metered dose inhaler through the Babyhaler with a face mask is effective. Albuterol causes a major reduction in the bronchial hyperreactivity in young wheezy children shortly after administration.
authors.affiliation: Institute of Pulmonology, Hadassah University Hospital, Jerusalem, Israel.
authors.forename: A
authors.initials: A
authors.lastname: Avital
authors.forename: S
authors.initials: S
authors.lastname: Godfrey
authors.forename: J
authors.initials: J
authors.lastname: Schachter
authors.forename: C
authors.initials: C
authors.lastname: Springer
mesh_terms: D000420:Albuterol / Q000008:administration & dosage*; D001249:Asthma / Q000188:drug therapy* / Q000503:physiopathology; D001985:Bronchial Provocation Tests; D016084:Bronchoconstriction / Q000187:drug effects*; D002675:Child, Preschool; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D016210:Methacholine Chloride; D009330:Nebulizers and Vaporizers; D012135:Respiratory Sounds
chemical_list: D016210:Methacholine Chloride; D000420:Albuterol