The term “adventitious” breath sounds refers to extra or additional sounds that are heard over normal breath sounds. The dense tissue transmits sound from the lung bronchi much more efficiently than through the air-filled alveoli of the normal lung.
These conditions cause the lung tissue to be dense. When bronchial sounds are heard in areas distant from where they normally occur, the patient may have consolidation (as occurs with pneumonia) or compression of the lung. For example, bronchial (loud & tubular) breath sounds are abnormal in peripheral areas where only vesicular (soft & rustling) sounds should be heard.the presence of 'normal' sounds in areas where they are normally not heard.Abnormal breath sounds Abnormal Breath Sounds
