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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.
Abnormal breathing sounds heard during. inhalation or expiration, with or without a. stethoscope. CRACKLES. ï±. Fine crackling or bubbling sounds, commonly. heard during inspiration when there is fluid in. the alveoli; also called rales. ï. Crackles are commonly associated with bronchitis, pneumonia, and heart failure (HF).