Medications can be taken in a variety of ways. Inhaled therapies are the main method for drug delivery in respiratory chronic diseases, such as COPD and Asma. It is necessary to accomplish the correct technique to achieve a therapeutic effect. Many errors concerning the inhalation techniques are described in the literature; some being considered as critical, while others are described as non-critical errors.

Objectives: to understand if patients had mastered the inhaler technique properly and if not, what were their main errors. Were these critical or non-critical ones? Moreover, it was also an objective to know how many sessions were needed for the patient to learn the correct procedure as well as how many times the patient inhaler technique was revised by the health professional.

It is a descriptive observational study, took place during 2022 in an internal medicine ward. The inhalation techniques were observed in 67 patients according to a verification checklist. The checklist took in account the specific inhaler the patient was using.

Results: 1,4% had the right inhaler technique; 98,6% made some errors during inhaler administration from which 67,2% made critical and 32,8% made no critical errors. It should be noted that 7,4% were incapable of doing the prescribed inhaler and 2.9% didnŽt use the correct prescribed inhaler. 91,1 % had never had any recheck concerning the inhalation technique and 5.8 sessions were needed to get the needed competences.

Conclusion: Patient education is a simple and vital task to improve inhaler therapy. No device is good enough if the patient doesn?t know how to use it. It seems to be fundamental to teach the right technique, to practice with the patient and to recheck.