ASSESSING METERED-DOSE INHALER TECHNIQUE - COMPARISON OF OBSERVATION VS. PATIENT SELF-REPORT

The purpose of this study was to develop and determine the validity of a patient-completed questionnaire that assesses metered-dose inhaler (MDI) technique. Self-reported MDI technique was compared to observed technique. The questionnaire included nine steps for MDI use, with two to three response choices for each step. A total of 159 patients were studied. Direct observation revealed that greater than 82% of patient s exhibited inadequate technique (more than two out of nine steps inco rrect). The mean percentage agreement between the questionnaire and ob servation was 77.4%. Questionnaire results where in higher agreement w ith observation when patients performed correct MDI technique.