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.
Adult inpatients with the 2019 coronavirus disease (COVID-19) are at an increased risk of mortality if they are older, have high Sequential Organ Failure Assessment (SOFA) score and d-dimer >1 μg/mL, according to a China study. Viral shedding can last for up to 37 days among survivors, while the virus appears to be detectable until death among nonsurvivors.
Almost half of patients with coronavirus disease 2019 (COVID-19) do not achieve clear clinical and radiological remission within 10 days after hospitalization, reveals a recent study. Factors associated with poor prognosis include male sex, anorexia and no fever upon admission.
The presence of eczema or atopic dermatitis with concurrent allergic sensitization at 1 year of age was associated with an increased risk of developing asthma and food allergy in later childhood at 3 years old, according to the CHILD* study.