Patients with severe asthma and blunted perception of their bronchial obstruction are likely to have elevated risk of death from asthma. The authors describe the case of a 52-year-old woman with asthma whose test results, in a prospective study for the identification of patients with blunted perception of the intensity of their own bronchial obstruction, showed the minimum score in the analogic visual scale in the presence of reduced morning FEV1 and EFP. After the study, the patient was seen at the outpatient clinic. He had no complaints, seemed normal at physical examination and reported to be using no medication at all. Then, while still in the clinic, he suddenly developed dyspnea, respiratory failure, and non-revertible cardio-respiratory failure. Blunted perception of the bronchial obstruction severity probably contributed to the development of acute respiratory failure and death of the patient.

Keywords: Dyspnea. Asthma. Bronchial spasm. Death. Perception.