Nature of wet wheezing

Wet rales, taking into account the peculiarities of the pathological process in the lungs, are of such types as sonorous rales (they are also consonant) and non-vocal rales, that is, non-conservative.

Sonic moist rales are recorded if there is a liquid secret in the bronchi, and the bronchi are surrounded by a thickened pulmonary tissue without air. Also, wheezing is found in the smooth cavities of the lungs, wrapped in a compacted lung tissue. In addition to these reasons, the cavity can act as a resonator, which provides an increase in the intensity of the sound of moist rales. When listening to loud wheezing it may seem as if they arise directly under the ear.

If sonorous wheezes are fixed in the lower areas of the lungs, this may indicate inflammation of the lung tissue that is located around the bronchi. In turn, wheezing in the subclavian or subscapularis areas indicate tuberculosis infiltration or the presence of a cavity in the lung.

Rattles of the non-sound type are recorded during inflammation of the mucous membrane of the bronchi (that is, with bronchitis), as well as in cases of acute pulmonary edema caused by insufficiency in the left compartment of the heart.

The sound, which is caused by the bursting of bubbles in the lumen of the bronchi, as it moves to the surface plane of the chest is blocked by an “air cushion” of the lungs, which provides cover for the bronchi as if they are wrapped in this pillow.

Auscultation makes it possible to identify what is known as the noise of a falling drop - gutta cadens. Such noise is recorded in large cavities of the lungs, as well as in the cavity of the pleura, where there is liquid pus and air masses when the patient is transferred from a horizontal position to a vertical one and vice versa.

When you change the position of a purulent fluid sticks to the upper zone of the cavity, accumulating in the form of droplets, which fall downwards again and again and hit the plane of the liquid sputum or pus, which are located in the cavity.

And this is even more interesting:

  1. Dry wheezing phases
  2. Dry rales
  3. Wet rales
  4. Crepitus
  5. Comparative percussion: air reduction