Bronchiolitis (Causes, Pathophysiology, Signs and Symptoms, Treatment)
3 years ago
The main causative agents is the Respiratory Syncytial Virus. Other causes include rhinovirus and parainfluenza.
In bronchiolitis the changes include narrowing of the airways due to mucus hypersecretion, cell wall thickening and smooth muscle contraction. These findings are also seen in patient who have asthma. And in infants around 2yo bronchiolitis can often be mistaken as asthma. Bronchiolitis also causes air trapping where oxygen can be inhaled but gets trapped in the lower respiratory tract due to surrounding inflammation. This causes difficult breathing for the infant."
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