Lung Sounds Definition
Lung sounds, also called respiratory sounds or breath sounds, can be auscultated across the anterior and posterior chest walls with a stethoscope. Adventitious lung sounds are referenced as crackles (rales), wheezes (rhonchi), stridor and pleural rubs as well as voiced sounds that include egophony, bronchophony and whispered pectoriloquy. Descriptions and audio recordings for all of these sounds are available on this website.
Lung Sounds Reference Guide
Our auscultation guide provides quick access to normal, voiced and adventitious sounds. Our guide includes audio recordings, listening tips and a waveforms.
Lung Sounds Lessons
Learn lung sounds by taking our free courses
These courses cover basic and intermediate levels of adventitious lung sounds and voiced sounds.
Use the table of contents below to review and access a course or lesson.
Basics of Lung Sounds
The goal of this basic course in lung sounds is to improve auscultation observational skills. We focus on describing important breath sounds and in providing recordings of each. Many students find that waveform tracings aid in learning lung sounds; we have included dynamic (moving cursor) waveforms with each lesson. The anatomy pages use illustrations to reveal an example of each lung sound (anatomy not yet available on smartphones).
Intermediate Lung Sounds
The goal of this intermediate course is to expand your observational skills when auscultating breath sounds. The course lessons include voiced sounds: bronchophony, egophony and whispered pectoriloquy. We also provide auscultation lessons on several types of wheezes, crackles and stridor. Each of these lung sound lessons includes audio, text and dynamic waveform. The anatomy pages use illustrations to reveal an example of each lung sound (anatomy not yet available on smartphones).
Pulmonary Problem Solving
Cases in pulmonary problem solving that integrate clinical skills training with respiratory care. This course is presented by the Practical Clinical Skills website.
As a supplement to our courses and reference guides, we provide auscultation repetition training. This training is available using courses or quick lessons.