Crackling sounds bilaterally at the bases of lungs is referred as:

Crackling sounds:- It is lung sound heard on auscultation of the chest, produced by air passing over retained airway secretions or the sudden opening of collapsed airways. Crackling sound may be heard on inspiration or expiration. A crackle is a discontinuous adventitions lung sound as opposed to a wheeze, which is continuous. The crackles are described as fine or coarse.

Causes of crackilng sound: When the small air sacs in the lungs fill with  fluid and there any air movement in the sacs as when you are breathing.The lung air sacs fill with fluid when a person has pneumonia, heart failure. 

Treatment of crackling sound: Doctor treat the cause of the crakling sound. Usually treat bronchitis and bacterial pneumonia with antibiotics and viral infection with antiviral medications.

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