A total of 85 patients using MDI were included in this study. The average age of participants was 44 years and 25% were women. The use of MDI presents an obvious difficulty in the simultaneous coordination of respiratory and motor functions. movements for the patient with airway obstruction. We found that only 20% of patients were able to perform the inhalation technique correctly, as we assessed the technique by visual observation and noted it on the checklist. In total, 68 patients (80%) performed at least one essential step incorrectly. The considerable number of errors regarding inhalation technique observed in our study is in line with previous studies. The study by Buckley D[2] reported that only 18 out of 71 patients (25%) had perfect technique, 26 (37%) had adequate technique and 27 (38%) had poor technique and the patients those most likely to have poor technique were those using a metered-dose inhaler (MDI). Study by Molimard et al.[3] also reported similar results that at least 76% of MDI users made >/1 error. In our study, initial training on the use of inhalers was mainly provided by doctors (55%), followed by trained nurses (24.70%) and approximately 12% of patients were instructed by a parent or patient. neighbor. It was also found that the association between the accuracy of different steps was significantly related to the steps taught by the doctor (Table #4). Approximately 6% of patients had learned the technique self-taught using brochures. Only 2% of patients had received their initial training from pharmacists. This highlights the varied range of guides that the patient comes into contact with and also draws attention to the fact that appropriate training of the care team such as nurses and pharmacists could help in... .. middle of paper ......nice and follow-up observation could greatly contribute to improving patients' inhalation skills and therefore treatment effectiveness. We conclude that substantial errors were made by patients using the MDI as an inhalation device. Teaching proper technique will not only improve patient compliance, but will also lead to better disease control and reduced costs and stress for emergency medical services. Although it is the primary responsibility of the doctor prescribing the inhaler to provide the patient with appropriate instructions for using the device, this responsibility could also be shared among the health care team, such as pharmacists. which could play a vital role in teaching and reinforcing technique, as was found in our study. Careful monitoring of these patients is necessary and if the patient still has faulty technique, a change in prescription could also be considered...