[Expert Solution]: An elderly female patient with a 40 year…

An elderly female patient with a 40 year history of smoking presents to the clinic with complaints of progressive shortness of breath over the past several years she knows that her breathlessness is most pronounced when climbing stairs and caring groceries she denies any chest pain chronic cough or significant sputum production physical examination reveals barrel chest and decrease breath sounds with prolonged expiration pulmonary function test are ordered considering the likely diagnosis what would be the most likely finding for the diffuse capacity