Crackles - Coarse (Rales) Reference Guide.
Crackles - Coarse (Rales)Coarse crackles are discontinuous, brief, popping lung sounds. Compared to fine crackles they are louder, lower in pitch and last longer. They have also been described as a bubbling sound. You can simulate this sound by rolling strands of hair between your fingers near your ear.
Patient Recording - Half Speed Playback
The patient's position should be seated.
Features: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