What does the term 'adventitious breath sounds' refer to?

What does the term 'adventitious breath sounds' refer to?

• A. Normal breath sounds
• B. Abnormal lung sounds such as rales/crackles and rhonchi heard during auscultation
• C. Sounds heard in the heart
• D. Absence of breath sounds

Answer: (B)

Adventitious breath sounds are abnormal lung sounds heard during auscultation, signaling an underlying airway or parenchymal problem. The classic examples are rales/crackles and rhonchi, which reflect issues like fluid in the small airways or secretions in the larger airways. Rales/crackles come from the movement of fluid or collapsed alveoli, while rhonchi arise from secretions that may clear with coughing. These are not normal breath sounds, unlike vesicular or bronchial sounds, and they’re distinct from sounds heard over the heart or from a complete absence of breath sounds, which point to other concerns.

Adventitious breath sounds are abnormal lung sounds heard during auscultation, signaling an underlying airway or parenchymal problem. The classic examples are rales/crackles and rhonchi, which reflect issues like fluid in the small airways or secretions in the larger airways. Rales/crackles come from the movement of fluid or collapsed alveoli, while rhonchi arise from secretions that may clear with coughing. These are not normal breath sounds, unlike vesicular or bronchial sounds, and they’re distinct from sounds heard over the heart or from a complete absence of breath sounds, which point to other concerns.