A patient has a long history of chronic obstructive pulmonary disease (COPD) . During the assessment, the nurse will most likely observe which of these?

A) Unequal chest expansion
B) Increased tactile fremitus
C) Atrophied neck and trapezius muscles
D) Anteroposterior-to-transverse diameter ratio of 1:1

An anteroposterior-to-transverse diameter ratio of 1:1 or barrel chest is observed in individuals with COPD because of hyperinflation of the lungs. The ribs are more horizontal, and the chest appears as if held in continuous inspiration. Neck muscles are hypertrophied from aiding in forced respiration. Chest expansion may be decreased but symmetric. Decreased tactile fremitus occurs from decreased transmission of vibrations. With a pneumothorax, free air in the pleural space causes partial or complete lung collapse. If the pneumothorax is large, then tachypnea and cyanosis are evident. Unequal chest expansion, decreased or absent tactile fremitus, tracheal deviation to the unaffected side, decreased chest expansion, hyperresonant percussion tones, and decreased or absent breath sounds are found with the presence of pneumothorax. (See Table 18-8 for descriptions of the other conditions.)