Listen to the chest anteriorly and laterally as the patient breathes with mouth open, somewhat more deeply than normal. Compare symmetric areas of the lungs, using the pattern suggested for percussion and extending it to adjacent areas as indicated.
Listen to the breath sounds, noting their intensity and identifying any variations from normal vesicular breathing. Breath sounds are usually louder in the upper anterior lung fields. Bronchovesicular breath sounds may be heard over the large airways, especially on the right.
Identify any adventitious sounds, time them in the respiratory cycle, and locate them on the chest wall. Do they clear with deep breathing?
If indicated, listen for transmitted voice sounds.
See Table 6-6, Adventitious (Added) Lung Sounds: Causes and Qualities (p. 241), and Table 6-7, Physical Findings in Selected Chest Disorders (pp. 242-243).
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