In this example, a patient has chronic bronchitis. Course crackles are heard over most of the anterior and posterior chest walls. Use the slider to reveal a depiction of the lungs where these course crackles originate.
Skin and Ribs


Blended View


Lungs


Move slider to reveal lungs




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.