Which description best matches normal breath sounds heard over most of the lung fields?

Which description best matches normal breath sounds heard over most of the lung fields?

• A. Bronchial
• B. Crackles
• C. Wheezes
• D. Vesicular

Answer: (D)

Vesicular breath sounds are the normal sounds heard over most of the lung fields. They come from air moving through the small airways in the peripheral lungs and are soft and low-pitched. You hear them more during inspiration, with a gentle fade during expiration, reflecting unobstructed air movement in the distal airways. This contrasts with bronchial breath sounds, which are louder and harsher with a prominent expiratory component and are heard over the trachea or major bronchi rather than the periphery. Crackles are discontinuous popping sounds associated with fluid or secretions in the small airways, and wheezes are continuous musical tones from narrowed airways; both are not typical of normal lung examination. So the description that matches normal breath sounds over most of the lung fields is vesicular.

Vesicular breath sounds are the normal sounds heard over most of the lung fields. They come from air moving through the small airways in the peripheral lungs and are soft and low-pitched. You hear them more during inspiration, with a gentle fade during expiration, reflecting unobstructed air movement in the distal airways. This contrasts with bronchial breath sounds, which are louder and harsher with a prominent expiratory component and are heard over the trachea or major bronchi rather than the periphery. Crackles are discontinuous popping sounds associated with fluid or secretions in the small airways, and wheezes are continuous musical tones from narrowed airways; both are not typical of normal lung examination. So the description that matches normal breath sounds over most of the lung fields is vesicular.