Inhaled corticosteroids should be taken continuously. As the methods of inhalation vary depending on the pharmaceutical preparations of inhaled corticosteroids, satisfactory effects cannot be expected without proper inhalation. This paper deals with the assessment of inhalational skills with the use of a manual of corticosteroid inhalation and a check sheet of patients’ performance. The effective inhalation as judge by the combination of the speed and the time needed for inhalation was assessed with the help of the training device for inhalation of each inhaled corticosteroid. The average scores of inhalational skills were increased significantly as follow ; aerosol : from 3.8 to 4.9 (p=0.035), Turbuhaler: from 2.6 to 3.0 (p=0.003), discus: from 4.9 to 6.0 (p<0.001). Among 7 in patients (38.9%) who were insufficient in inhalational ability, except for 1 patient who interrupted medication, 4 and 2 patients were improved in the speed and the time needed for inhalation, respectively. It was suggested to advise physicians to dispense alternative preparations of inhaled corticosteroids depending on the repeated evaluation of the inhalational ability.
