The study is a randomized controlled trial protocol in hospitalized patients with acute exacerbation of COPD. The aim is to determine whether short-term visual instructions on inhaler technique reduce the frequency and severity of exacerbations within 12 weeks of discharge. Patients will be randomly assigned to an experimental group with visual inhalation instructions (VIT) or a control group with traditional inhalation instructions (TIE). During hospitalization, the TIE group will receive two standardized sessions led by a respiratory nurse, the VIT group two visual instruction sessions under the supervision of a physiotherapist. The primary outcome will be the number of exacerbations within 12 weeks of discharge. Secondarily, total mortality, severity of individual exacerbations (EXACT-Pro score), lung function, physical fitness (6-minute walking test, grip strength, maximal knee contraction) and respiratory muscle strength (maximum inspiratory and expiratory pressures) will be evaluated. Other secondary endpoints will be dyspnea severity, adherence to inhaled therapy, and quality of life assessed by the COPD Assessment Test at week 12 after discharge. The authors hypothesize that the results may help to improve strategies for education and management of inhalation technique in patients with AE COPD.