Wet rales

Wet rales occur due to accumulation in the lumen of the bronchi of a certain liquid secretion (such as sputum, edematous fluid, blood). When air flows through these secrets, air bubbles are formed there that have different diameters. Such bubbles, passing through a layer of liquid secretion of the lumen of the bronchus, where there is no liquid, then actively burst, which leads to the formation of a sound that can be compared with a crash.

Similar sounds are easy to imitate due to the bursting of bubbles that form in the water, if blown on it by means of a tube of small diameter. These audible sounds are known as bubble sounds. They are also called simply wet wheezing.

Wet rales can be fixed at the stage of inhalation and exhalation. However, taking into account the fact that the rate of transfer of air masses through the bronchi during the inhalation stage is much higher than during the exhalation stage, rales of the wet type are characterized by an increased volume level during the inhalation stage.

Depending on the caliber of the bronchi, where moist rales appear, the latter can be divided into fine bubbling, medium-bubbly and large bubbling. Fine bubbling rales form in the bronchi of a small caliber. Such sounds can be perceived as short in duration and multiple sounds.

As for wheezing, which manifest themselves in the smallest bronchi and bronchioles, they can be compared with crepitus, with which they should not be confused.

Medium bubble rales can be fixed in the bronchi of medium caliber, and coarse bubble - in turn, in the large bronchi, as well as in large bronchiectasis and in the cavities of the lungs. In the latter case, this is possible because of abscesses or cavities in which there is a liquid secret and which have access to the large bronchi.

Finally, large-bubble rales can be distinguished by long low and significantly louder sounds. If large cavities with a diameter of 5-6 cm are located directly above large cavities, then the type of sound may change in wet rales - it will become more metallic.

When a cavity or segmental bronchiectasis is formed in the lung, wheezing can be fixed in a small area of ​​the chest.

Chronic bronchitis or, for example, severe pulmonary congestion, which occurs in left heart failure syndrome, is characterized by moist, sometimes mixed, wheezing of a bilateral nature in the symmetrical zones of the lungs.

And this is even more interesting:

  1. Dry wheezing phases
  2. Crepitus
  3. Dry rales
  4. Nature of wet wheezing
  5. Increased vesicular respiration