Basics of Lung Sounds Bronchial Lesson Waveform Anatomy 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. Skin and Ribs Blended View Lungs Move slider to reveal lungs play pause Table of Contents 1Vesicular - Normal 2Crackles - Fine (Rales) 3Crackles - Coarse (Rales) 4Wheeze 5Rhonchi - Low Pitched Wheezes 6Bronchial 7Pleural Rubs 8Bronchovesicular Quiz 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 .