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Inhaler treatment options in COPD

CORRESPONDENCE: S. P. Newman, Scientific Consultant, Nottingham, UK. E-mail: steve.newman{at}physics.org

A variety of inhaler devices are available for delivering treatments to patients with chronic obstructive pulmonary disease, and new inhalers are currently being developed. Each type of device has advantages and disadvantages, and the methods of preparation and use vary between them. The differences in instructions for use can easily confuse patients and health providers alike, resulting in incorrect use of many inhalers. "Crucial" errors in inhaler technique, whereby no drug is deposited in the lungs, must be avoided. Any type of inhaler can be misused so that little or no drug is deposited in the lungs.

It is now increasingly widely recognised that a successful treatment outcome in chronic obstructive pulmonary disease depends as much on the inhaler device as it does on the drug. Inhaler choice in chronic obstructive pulmonary disease should take into account whether the patient is likely to use it correctly, as well as patient preference and the likelihood of adherence to treatment.

KEYWORDS: Chronic obstructive pulmonary disease, dry powder inhaler, pressurised metered-dose inhaler, soft mist inhaler, spacer device