Peak flowmeter and spirometer mouthpieces as expansion chambers for metered dose aerosols.
Expansion chambers increase effective bronchial delivery of metered dose aerosol asthma medications. A subjective comparison suggests that peak flowmeter and spirometer mouthpiece tubes function effectively as expansion chambers, though less so than a prototype commercial device. Use of mouthpieces as expansion chambers is recommended until improved devices become available.
D000284:Administration, Oral; D000336:Aerosols; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage*; D001249:Asthma / Q000188:drug therapy; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D006801:Humans; D009064:Mouth Protectors; D010349:Patient Compliance; D010366:Peak Expiratory Flow Rate / Q000295:instrumentation / Q000379:methods; D013147:Spirometry / Q000295:instrumentation / Q000379:methods
D000336:Aerosols; D000893:Anti-Inflammatory Agents; D001993:Bronchodilator Agents