Crepitus in the lungs , a kind of noise arising from rasliani spasica and more than usually moist walls of the alveoli. In contrast to wheezing (see) crepitus shall be heard at the height of inspiration, does not appear and does not disappear after coughing. Sometimes it can be difficult to distinguish fine bubble moist rales from creditarii.
Crepitus is the most important diagnostic sign of inflammation of the lungs of any etiology. When lobar pneumonia distinguish primary crepitation (when the exudate is only beginning to emerge in the alveoli) and the crepitation a resolution (exudate begins to dissolve). In the elderly and debilitated bedridden patients crepitus may listens in the lower lung when the first deep breaths result in the so-called physiological atelectasis.
2. Subcutaneous crepitus is feeling the crunch and crackles at palpation due to accumulation of free gas bubbles in subcutaneous adipose tissue, subcutaneous crepitus is a sign of anaerobic infections (see).
3. Bone crepitus - crunch arising from the friction of fragments of bone fractures (see).