A 56-year-old man comes to the physician for a 1-month history of progressive dry cough and a 6-month history of shortness of breath. Vitals are normal. Auscultation of the chest shows a loud S2. Which of the following is the most appropriate pharmacologic therapy for this patient?
Diltiazem
Dornase-alfa
Furosemide
Lisinopril
Pirfenidone
