During an attack, breathing gets difficult because of the swelling in the lining of the airways, muscles around the airways tightening and the small airways
in the lungs get clogged.
RSV is the most common cause of bronchiolitis (inflammation of the small airways
in the lung) and pneumonia in children under 1 year of age in the United States.
 Truly speaking very few long-term Indian studies  as well as in other parts of the world [8-12] have been conducted till date to evaluate the rationality of using LABA, particularly for SAO in spite of having the knowledge about the involvement of small airways
among patients with acute and chronic LRS as well as mild-to-severe diseases.
During their first year of life, around a third of children in the UK will develop bronchiolitis - in which a virus causes inflammation of the small airways
in the lungs (bronchioles).
Asthma occurs when small airways
in the lungs become red, swollen and sensitive and react badly to triggers such as pollen, exercise, and cigarette smoke.
In their study, the median survival of BPIP was approximately 10 years, and histologic findings of organizing tissue in the small airways
, fibroblastic foci, and microscopic honeycombing predict worse survival.
The small airways
and distal lung compartment in asthma and COPD: A time for reappraisal.
According to the company, the Calypso system works by implanting the Anchored Beacon transponders in small airways
within or near the tumour target.
Compared with the heterogeneity in ventilation, the changes in small airways
measured by the [N.sub.2]SBW test were associated to a lesser extent with the CPET parameters and HRQoL.
Tracheotomy removal of foreign body is rare but the surest method of removal of foreign body in children and adults in cases of small airways
with larger, impacted foreign bodies or in cases of abnormally placed foreign bodies where endo-scopic removal intraorally is unsuccessful or impossible6-8.
This results in a blockage in the lung's small airways
, which leads to breathing difficulties.
Among children younger than 1 year of age, RSV is the leading cause for bronchiolitis, an inflammation of the small airways
in the lung, and pneumonia, an infection of the lungs, the Centers for Disease Control and Prevention notes.