Correct use of metered-dose inhalers and spacer devices

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Abstract
In the case of metered-dose inhalers, a picture or even a thousand words is not enough. Patients must be shown the proper technique, allowed to practice in the presence of their instructor, and receive follow-up review of their technique at each office visit. Medications can achieve long-term control of asthma symptoms but only if they are deposited in the lungs in adequate quantities. The authors summarize the problems and solutions of inhaler use among asthma patients.