Crackles - Coarse (Rales)
Listening Tips
Course crackles are discontinuous, brief, popping sounds. Similar to the sound of a hook and loop fastener being pulled apart. They have also been described as a bubbling sound. More common during inspiration.
Seated
Diaphragm
Relevant Courses
If you wish to review a complete lesson concerning Crackles - Coarse (Rales), we provide complete
lessons. The following lesson modules(s) may be useful.
Each lesson includes text that explains the auscultatory sound and its clinical significance.
The lesson also includes an audio track for playback. A waveform provides a great way to visualize
the sounds. Finally, we also include an animation video. For heart sounds, the video illustrates
heart muscle and valve movements along with blood flow. For lung sounds, the primary source of the sounds
can be seen. Each module also includes a quiz.