An assessment of a patient with newly diagnosed chronic bron…

An assessment of a patient with newly diagnosed chronic bronchitis reveals an alert, cooperative, and oriented patient. Low-pitched wheezes are heard bilaterally on auscultation. The patient has a productive cough, producing copious amounts of sputum; no fever; a pulse of 85 beats/min; respirations of 18 breaths/min; and blood pressure of 145/90. The most appropriate lung expansion therapy for this patient is which of the following?