The nurse is auscultating the lungs of an adult client. The nurse hears low-pitched, soft breath sounds over the posterior lower lobes and inspiration that is longer than expiration. The nurse recognizes that these breath sounds are:
A.
Bronchovesicular breath sounds and normal in that location.
B.
Normally auscultated over the trachea.
C.
Vesicular breath sounds and normal in that location.
D.
Bronchial breath sounds and normal in that location
The correct answer and Explanation is :
The correct answer is C. Vesicular breath sounds and normal in that location.
Explanation:
Vesicular breath sounds are the most commonly heard breath sounds in healthy individuals and are typically auscultated over most of the lung fields, particularly the peripheral lung areas, such as the posterior lower lobes. These sounds are soft, low-pitched, and heard more clearly during inspiration than expiration. In vesicular breath sounds, inspiration lasts longer than expiration, which matches the description of the sounds the nurse hears in this case.
Understanding Breath Sounds:
- Vesicular Breath Sounds: These are the normal breath sounds heard over most lung fields, particularly the periphery. They are characterized by:
- A soft, low-pitched sound.
- A longer duration of inspiration compared to expiration.
- A gentle “rustling” quality.
Vesicular sounds are normal when heard in areas like the lower lobes, as they indicate air moving through small airways and alveoli. The nurse’s findings in this scenario align with this normal pattern. - Bronchial Breath Sounds: These are higher-pitched, louder sounds that are normally heard over the trachea or large airways. In these sounds, expiration is longer than inspiration. If bronchial sounds are heard over peripheral lung fields, this may indicate consolidation, such as in pneumonia.
- Bronchovesicular Breath Sounds: These are moderate-pitched sounds that are normally heard over the major bronchi (near the center of the chest, close to the sternum and spine). Inspiration and expiration are equal in length, and hearing these sounds in other areas may suggest an abnormality.
Therefore, the nurse’s finding of low-pitched, soft sounds with a longer inspiratory phase over the posterior lower lobes is consistent with normal vesicular breath sounds. Recognizing these sounds is crucial in assessing a patient’s respiratory function and identifying abnormalities such as fluid accumulation, consolidation, or airway obstruction.