As part of a comprehensive lung exam, a doctor may try to listen for various sounds by tapping your back and chest with their hand, which is a test called percussion. If the percussion produces a drum ...

Hyperinflation of the lungs is a common complication of c hronic obstructive pulmonary disease (COPD). It happens when too much air gets trapped inside your lungs. When you can’t exhale properly, ...

Lung sounds are the noises a person makes as they breathe in and out, including sounds of regular breathing. However, wheezing, crackling, stridor, and other sounds can also occur, indicating an ...

What are pulmonary function tests? Pulmonary function tests (PFTs) are tests of lung function. They are intended to evaluate and monitor chronic obstructive pulmonary disease (COPD). COPD is ...