Chronic occupational lung disease is characterized by (Select all that apply.)
A) causation from long-term inhalation of inorganic material.
B) a latent period before symptoms occur.
C) hyperactive respiratory macrophages.
D) a progressive cough and dyspnea with exercise.
E) possible negative chest x-ray when symptom-free.

Question

Quizplus · Accepted Answer

Chronic occupational lung disease is caused by long-term inhalation of inorganic material.A latent period of 10 to 20 years may ensue before symptoms occur.One of the earliest manifestations is a progressive cough and dyspnea on exertion.The disease cannot be ruled out by a negative chest x-ray.Impairment of macrophage function is the primary mechanism through which inorganic particles initiate lung disease.

Chronic Occupational Lung Disease Is Characterized by (Select All That