Atresia khohan

Choans are the back holes of the nose that communicate the nasal cavity with the pharynx. Through the choana, the air that enters the inhalation enters the respiratory tract. The growth of the choanal aperture is of particular importance for infants, as it deprives them of the ability to suckle their breasts and can cause early starvation. Doctors are not well acquainted with these hidden anomalies of the nose, and very many cases remain unrecognized for a long time. For one-sided infections, which are present in adults somewhat more often than bilateral infections, the always present obstruction of one half of the nose is characteristic, the allocation from time to time of a large amount of thick, slightly unclear mucus. Slime that accumulates in the affected half of the nose is not withdrawn by breathing and blowing, as this half of the nose is impassable for air. As a result, a large lump gradually forms in the very back and deep part of the nose from the affected side, which involuntarily pours out in the form of a viscous mucous mass when the head is tilted forward. Upper teeth, especially incisors, often grow irregularly, the palate usually high( with unilateral atresia - only on one side).With bilateral atresia, the voice becomes nasal.

Treatment of this developmental abnormality is only prompt. Prior to the operation, the nature of atresia is clarified on the basis of the questioning of a person and the necessary additional research methods. Particularly important is the role of X-ray research. The end of the probe, inserted into the depth of the nasal cavity, usually rests against a dense tissue that closes the posterior hole of the choana, preventing the passage of air. One of the additional methods of investigation is a contrast radiographic examination of the nasal cavity, in which a contrast agent is injected into the nasal cavity, and then a snapshot of the nasal cavity is taken. As a result of such a study, it is established that the nasal cavity does not communicate with the nasopharynx.

Since during atresia nasal breathing, smell and other functions of the nose are violated, the formation of a small canal is insufficient during the operation, since it does not completely restore nasal breathing and sense of smell, normal air flow in the nasal cavity and its natural exit from the paranasal sinuses. In surgical interventions to eliminate atresia of the nose, they strive to ensure that the air stream passes through the physiological channel. At congenital bone atresia of the khon , when the bone is too thick, it is drilled with a drill. The formed hole is expanded with a saw, chisel or bone forceps. The available webbed seals are excised. In the case of complete atresia, an opening is first formed, then expanded by rods. To make the dilated hole resistant, smooth drainage tubes are introduced into the nasal cavity and leave them for at least 21 days. This is necessary, since there is a tendency to infestation of the formed hole. To expand the formed hole, tubes are used that are fixed with tampons, taking into account the fact that nasal breathing can be performed through them. If after surgery spikes are formed between the wound surfaces, they are excised and a plate is inserted between them for several days. If this method fails to obtain a satisfactory result, a second operation is performed. The criterion of a positive result of the performed surgical intervention is the restoration of not only nasal breathing, but also other physiological functions of the nose.