Which type of breath sound should be expected by the nurse when auscultating healthy clients' lower lung lobes if he comes to the clinic for a routine examination?

Vesicular is correct
The breath sound the nurse should be expecting when auscultating the lower lung lobes of a healthy client is the vesicular sound.

Vesicular breath sounds are heard across the lung surface during inspiration and expiration.
Bronchial breath sound are tubular, high pitched sounds which are heard when auscultating over large airways like the bronchi.

Tracheal breath sounds are harsh breath sounds normally heard over the trachea.

Bronchovesicular breath sounds are normal breath sounds heard in mid chest area.

They reflect a mixture of the pitch of the bronchial breath sounds heard near the trachea and the alveoli with the vesicular sound.

Vesicular-rationale: vesicular breath sounds are soft, low-pitched sounds normally heard over the lower lobes of the lung. theyre prolonged on inhalation and shortened on exhalation. bronchial breath sounds are loud, high-pitched sounds normally heard next to the trachea; discontinuous, theyre loudest during expiration. tracheal breath sounds are harsh, discontinuous sounds heard over the trachea during inhalation or exhalation. bronchovesicular breath sounds are medium-pitched, continuous sounds that occur during inhalation or exhalation. theyre best heard over the upper third of the sternum and between the scapulae. client needs category: health promotion and maintenance client needs subcategory: none cognitive level: application reference: taylor, c., et al. fundamentals of nursing: the art and science of nursing care,6th ed. philadelphia: lippincott williams & wilkins, 2007, p. 628.