Review Question - QID 211037

A 56-year-old man with diabetes mellitus type 2 and active tobacco use is admitted to the hospital because of a new oxygen requirement and difficulty breathing. He takes prednisone and pyridostigmine daily "to keep him strong." He smokes 1 cigar a week. His temperature is 99°F (37.2°C), blood pressure is 100/60 mmHg, pulse is 100/min, respirations are 30/min, and oxygen saturation is 90% on 5L nasal cannula. He has difficulty keeping his eyes open and slurs his speech but is able to protect his airway. He is admitted to the intensive care unit. Neurology is consulted for intravenous immunoglobulin therapy. A chest radiograph is obtained, which is shown in Figure A. Which of the following would most likely reduce future episodes of this patient's underlying condition?