Absent Attenuated Sounds


Absent/attenuated sounds occur when there is no airflow to the region being auscultated. This can occur in a pneumothorax, hemothorax, pleural effusion, or parenchymal consolidation, which includes the feeding airway.
Adventitious sounds can be classified as crackles, wheezes, rhonchi, or stridor. These sounds occur in addition to the breath sounds described above.
Absent Attenuated Sounds

Maneuver: Seated
Chestpiece Position: Chest wall
Chestpiece: Diaphragm