[Expert Solution]: A 70-year-old woman comes to the physician…

A 70-year-old woman comes to the physician because of progressive shortness of breath during the past 2 months. She was diagnosed with chronic obstructive pulmonary disease 6 years ago. The condition has not responded to intermittent albuterol use. She has smoked 1 pack of cigarettes daily for 50 years. Her temperature is 37°C (98.6 F), pulse is 104/min, respirations are 28/min, and blood pressure is 106/70 mm Hg. Physical examination shows distant breath sounds and scant wheezing but no crackles or rhonchi. It is most appropriate to add a drug from which of the following classes to this patient’s medication regimen? Adenosine receptor antagonist B-Adrenergic agonist Anticholinergic ager Leukotriene receptor antagonist Mast cell membrane