The retrosternal clear space in an emphysematous patient will measure greater than __________ cm from a point 3 cm below the sterna angle.

Question

Quizplus · Accepted Answer

The retrosternal clear space is the distance between the anterior border of the vertebral body and the posterior surface of the sternum. In patients with emphysema, the lungs are hyperinflated and push the sternum anteriorly, resulting in an increase in the retrosternal clear space. A measurement of greater than 4.5 cm from a point 3 cm below the sterna angle is suggestive of emphysema. Therefore, the best choice is C.

The Retrosternal Clear Space in an Emphysematous Patient Will Measure