Coifman R E
Ann Allergy. 1982 May;48(5):272-4.
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.
扩张室可增加定量气雾剂哮喘药物的有效支气管递送。主观比较表明，峰值流量计和肺活量计的咬嘴管可有效充当扩张室，尽管其效果不如一款商用原型设备。在有更好的设备可用之前，建议使用咬嘴作为扩张室。
