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3 Cards in this Set
- Front
- Back
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What is rales? |
A.k.a. crackles are scratchy sounds that occur in association with processes that cause fluid to accumulate within the alveolar and interstitial spaces. The sound is similar to that produced by rubbing strands of hair together close to your ear. Pulmonary edema is the most common cause. Pneumonia can result in discrete areas of alveolar filling, and therefore produce crackles restricted to a specific region of the lung. |
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Pneumonia lung sounds |
Dense consolidation of the lung parenchyma results in the transmission of large airway noises (those normally heard on auscultation over trachea- tubular or bronchial breath sounds) to the periphery. In this setting, the consolidated lung acts as a terrific conducting medium, transferring central sounds directly to the edges. Furthermore, if you direct the pt to say the letter 'eee' it is detected during auscultation over the involved lobe as a nasal-sounding 'aaa' (egophony). |
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Ronchi |
Secretions that form/collect in larger airways, as might occur with bronchitis or other mucus creating process, can produce a gurgling-type noise, similar to the sound produced when you suck the last bits of a milk shake through a straw. |
