Bronchial breath sounds are considered abnormal if heard over the peripheral lung fields. Bronchial breath sounds other than close to the trachea may indicate pneumonia, atelectasis, pleural effusions.
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Bronchial breath sounds are hollow, tubular sounds that are lower pitched. They can be auscultated over the trachea where they are considered normal.

There is a distinct pause in the sound between inspiration and expiration. I:E ratio is 1:3 .