What term describes the sound produced by overinflation of the lung?

The term that describes the sound produced by overinflation of the lung is hyperresonance. This abnormal sound occurs when there is an excessive amount of air in the thoracic cavity, such as in conditions like pneumothorax or asthma exacerbation.

Hyperresonance is characterized by a low-pitched, booming quality that is distinguishable from normal lung sounds. It indicates that the underlying lung tissue is unable to properly transmit sound due to the presence of an increased amount of air in the lungs, leading to a tympanic or hollow sound when percussion is performed.

In contrast, hyporesonance would indicate reduced air presence or fluid in the lungs, while dullness and flatness signify the presence of denser tissues or fluid, such as in cases of pleural effusion or consolidations. Thus, understanding the significance of these terms is crucial for assessing lung conditions effectively.