BOS - is a leading sign, which brings together a group of acute, recurrent and chronic lung disease, but it is not an independent nosological form and could not appear as a diagnosis. It should be noted that the BOS is not synonymous with bronchospasm, although in many cases, bronchospasm is important, and sometimes a leading role in the genesis of the disease. Usually BOS is diagnosed in children of the first four years of life, but can be diagnosed in older age.
In the genesis of bronchial obstruction are different pathogenetic mechanisms, which can be divided into:
• functional or reversible (bronchospasm, inflammatory infiltration, edema, mucociliary insufficiency, hypersecretion of viscous mucus)
• irreversible (congenital stenosis of the bronchi, their obliteration, etc.).
A major disadvantage is the pollution of the environment.
The scheme of the basic mechanisms of bronchial obstruction.
1. material into bronchi (foreign body, mucous etc.)
2. edema of bronchial mucous membranes (obstructive dronchitis)
3. retraction of bronchial muscles (bronchial asthma)
4. compression out of bronchus (mediastinum tumor, dilatation of pulmonary artery
at congenital heart diseases)
BOS usually is infectious-allergic nature. Among the viruses that most commonly cause BOS are respiratory syncytial virus (50%), then parainfluenza, rarely - influenza and adenovirus. Recently, in the development of BOS big role is due to intracellular pathogens. According to modern data, chlamydia and mycoplasma infection are determined in 20% of children with BOS. According to different authors, about 20-25% of bronchitis in children occur as an acute obstructive bronchitis (AOB), which is significantly higher than in adults.
Clinics of BOS
Diseases accompanied by BOS
Diseases of the bronchopulmonary system
BRONCOOBSTRUCTIVE SYNDROME IN PNEUMONIA
Help on prehospital stage
Apparatus for cleaning of nose
Help on a hospital stage
Oxygenation therapy through a nasal catheter