When auscultating the lungs of an adult patient, the nurse notes that low-pitched, soft breath sounds are heard over the posterior lower lobes, with inspiration being longer than expiration. How should the nurse interpret these findings?

A. Bronchial breath sounds that are normal in that location: Bronchial breath sounds are high-pitched and louder, with expiration lasting longer than inspiration. They are normally heard over the trachea and not over the posterior lower lobes. If bronchial sounds are heard in the lower lung fields, it may indicate lung consolidation, such as in pneumonia. B. Bronchovesicular breath sounds that are normal in that location: Bronchovesicular breath sounds are moderate in pitch and intensity, with inspiration and expiration being roughly equal in length. These sounds are typically heard over the major bronchi, near the sternum anteriorly and between the scapulae posteriorly, making them unlikely to be present in the posterior lower lobes. C. Normal sounds auscultated over the trachea: Breath sounds heard over the trachea are expected to be bronchial, which are loud and high-pitched, with expiration lasting longer than inspiration. The low-pitched, soft sounds described do not match the normal tracheal breath sounds. D. Vesicular breath sounds that are normal in that location: Vesicular breath sounds are soft and low-pitched, with inspiration lasting longer than expiration. They are the normal breath sounds heard over most of the peripheral lung fields, including the posterior lower lobes, confirming that these findings are normal.