This website offers free and paid lessons, auscultation guides and quizzes for adventitious breath sounds. On this page we provide a definition, and then we present examples of several types of adventitious breath sounds using audio recordings and text. Links to the free training courses are noted as well.
Adventitious breath sounds are abnormal sounds that are heard over a patient's lungs and airways. These sounds include abnormal sounds such as fine and coarse crackles (crackles are also called rales), wheezes (sometimes called rhonchi), pleural rubs and stridor. Adventitious breath sounds are important clues used for diagnosing numerous cardiac and pulmonary conditions. These sounds and corresponding conditions are described in our breath sounds courses.
Listening to these adventitious lung sounds usually with a stethoscope.
Lung sounds can be heard across the anterior and posterior chestwalls. Auscultation is best done in a quiet room, The chestpiece should be placed directly on the skin when possible.
Our auscultation guide provides information and examples of adventitious breath sounds. The guide pages provide waveforms with a moving cursor that is synchronized to the audio recording. In addition, listening tips are available.
While we have many breath sound lessons and quick references on this website. Please use the links below.
Learn important breath sounds. Our lessons cover over 15 adventitious breath sounds. Please review the lesson descriptions and links below.