After exposure to decomposed chlorodifluoromethane (freon-22), a 65-year-old man developed respiratory symptoms such as cough, blood-stained sputum, and increasing dyspnea. Three weeks later, his family doctor diagnosed infectious bronchitis. Another week later he died due to myocardial infarction. The discussion focuses on an inflammatory process caused by the inhalation of decomposed freon and its possible association with myocardial infarction.

Key terms case study; chlorodifluoromethane; decomposed chlorodifluoromethane; decomposition; freon-22; HCFC-22; inflammation; myocardial infarction; R22