Uncomplicated acute bronchitis is a self-limiting infection of the trachea and bronchi that usually lasts for 1 to 3 weeks. A healthy patient experiences sudden onset of cough, with or without sputum production.
It is an inflammatory response to infections of the bronchial epithelium of the large airways of the lungs that begins with mucosal injury, epithelial cell damage and release of proinflammatory mediators.
There is transient airflow obstruction and bronchial hyperresponsiveness.
Purulence can result from either bacterial or viral infection.
Use of the Zephyr endobronchial valve (EBV) led to significant improvements in a range of patient-reported outcomes (PROs) including multiple domains of respiratory symptoms and quality of life (QoL) in patients with severe emphysema, according to the post hoc results of the LIBERATE* trial presented at ERS 2019.
Investigators from The University of Hong Kong (HKU) recently identified a mutation in H7N9 virus which causes the virus to possess a higher ability to infect humans while maintaining its ability to circulate effectively in poultry.