What is the function of tracheomalacia test?

summary

Tracheomalacia test is based on the tracheomalacia is due to the lack of cartilage hardness and supporting force of the trachea caused by different degrees of collapse of the lumen of a pathological phenomenon. Tracheobronchial malacia is divided into congenital primary and acquired secondary. What is the function of tracheomalacia test?

What is the function of tracheomalacia test?

Abnormal results: thymus hypertrophy, enlarged lymph nodes, cyst or enlargement of atrium and ventricle, pulmonary artery ligament, vascular ring, trauma, tracheotomy, thyroid tumor, etc. Because of the long-term compression of the tracheal cartilage, the cartilage ring becomes thinner and thinner, and the elasticity is weakened. In the late stage, the absorption of the cartilage ring disappears and the cartilage ring becomes membranous tissue. The pathological mechanism may be due to long-term compression of tracheal cartilage ring, resulting in local blood supply insufficiency or local ischemia, long-term ischemic aseptic necrosis, so that the local disappearance of tracheal ring.

Need to check the crowd: suspected patients with tracheomalacia, is also one of the indispensable preoperative examination methods for patients with goiter. Normal value, the body has no disease, in a healthy state. Unsuitable crowd: No. Taboo before examination: pay attention to normal living and eating habits, pay attention to personal hygiene. Inspection requirements: actively cooperate with the doctor.

Related symptoms, preauricular lymphadenopathy, retroauricular lymphadenopathy, goiter, local lymphadenopathy, superficial lymphadenopathy, goiter, lymphadenopathy. The trachea and main bronchus of normal people are elastic tissues. The length of the trachea and main bronchus increases significantly when the neck is stretched or inhaled, but becomes shorter when the neck is flexed, exhaled or coughed. The diameter of trachea lumen changed diffusely in each respiratory phase. When forced expiratory or coughing, the tracheal cartilage was compressed and the transverse diameter of cartilage ring decreased. At the same time, the wall of the posterior membranous part shifted forward, or "hernia forward".

matters needing attention

It is difficult to make a correct judgment of tracheomalacia caused by goiter under general fluoroscopy. It is necessary to take a film under special conditions to clearly show the tracheomalacia. Wagner's test: first train the patient, ask the patient to close the glottis after trying to breathe in, and quickly take the film after strong breath holding. Miller's test: ask the patient to close the glottis after exhalation, and then take a quick film after inspiratory action.