Auscultation Training by Repetition

Crackles - Coarse (Rales)

Listen for 2-3 minutes

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.

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Lesson Text

If you wish to review a complete lesson concerning this sound, the following lesson modules(s) may be useful. Each lesson includes text that covers an auscultatory sound, a waveform and an animation video.

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