A nurse is assessing a client who has chronic bronchitis. Which of the following percussion sounds should the nurse expect?
A.
Dullness
B.
Tympany
C.
Resonance
D.
Flatness
The Correct Answer and Explanation is :
The correct answer is A. Dullness.
Explanation:
Chronic bronchitis is a condition characterized by inflammation of the bronchial tubes, leading to increased mucus production and chronic cough. During a physical assessment, the nurse uses percussion to evaluate the underlying lung tissue and detect abnormalities.
Percussion Sounds and Their Implications:
- Dullness:
- Definition: Dullness on percussion is a sound that is less resonant and more solid than normal. It is produced when fluid or solid tissue replaces the air normally found in the lungs.
- Relevance to Chronic Bronchitis: In chronic bronchitis, the increased mucus and inflammation can lead to areas of the lung where the normal air-filled spaces are filled with fluid or thickened tissue. This can result in dullness when percussing the affected areas. Dullness may be more pronounced in cases with significant mucus accumulation or associated complications like consolidation or pleural effusion.
- Tympany:
- Definition: Tympany is a high-pitched, drum-like sound usually heard over air-filled cavities, such as the stomach or intestines. It is not typically associated with lung conditions.
- Relevance: Tympany is not expected in the assessment of chronic bronchitis. It would be more indicative of gastrointestinal issues or a pneumothorax if present over the chest area, but not typically associated with bronchitis.
- Resonance:
- Definition: Resonance is a normal, hollow sound heard when percussing over healthy lung tissue. It indicates that the lung fields are filled with air and are functioning normally.
- Relevance: In chronic bronchitis, resonance might still be present in some areas; however, it is less characteristic of the disease process compared to dullness.
- Flatness:
- Definition: Flatness is a very soft, short, and high-pitched sound heard over dense tissue, such as muscle or bone.
- Relevance: Flatness is not typical for the lung fields and is more often associated with conditions where lung tissue is replaced by solid or fluid mass, which is less common in chronic bronchitis compared to dullness.
In summary, dullness is the percussion sound you would most expect to find in a client with chronic bronchitis due to the presence of increased mucus and possible inflammation altering the normal air-filled lung spaces.