Foodborne disease outbreaks caused by Bacillus cereus, Clostridium perfringens, and Staphylococcus aureus--United States, 1998-2008. Bennett SD(1), Walsh KA, Gould LH. Author information: (1)Centers for Disease Control and Prevention, 1600 Clifton Rd, MS C-09, Atlanta, GA 30333, USA. iyk3@cdc.gov.
1 Rales: Small clicking, bubbling, or rattling sounds in the lungs. 2  They are heard when a person breathes in (inhales). 3  They are believed to occur when air opens closed air spaces. 4  Rales can be further described as moist, dry, fine, and coarse. 5  Rhonchi: Sounds that resemble snoring.
Adventitious Breath Sounds: Name: Description: Cause: Location: Crackles (rales) Fine, short, interrupted crackling sounds; alveolar rales are high pitched. Sound can be simulated by rolling a lock of hair near the ear. Best heard on inspiration, but can be heard on both inspiration and expiration. May not be cleared by coughing. Air passing through fluid or mucus in any air passage: Most commonly heard in the bases of the lower lung lobes: Gurgles (rhonchi) Continuous, low-pitched, coarse, gurgling, harsh, louder sounds with a moaning or snoring quality. Best heard on expiration, but can be heard on both inspiration and expiration. May be altered by coughing.