Acute exacerbation of obstructive chronic bronchitis by Streptococcus pneumoniae

An acute exacerbation of obstructive chronic bronchitis by *Streptococcus pneumoniae* is a sudden, sustained worsening of lower respiratory symptoms in patients with underlying chronic obstructive pulmonary disease (COPD) or chronic bronchitis, driven by a bacterial infection of the tracheobronchial tree

An acute exacerbation of obstructive chronic bronchitis by *Streptococcus pneumoniae* is a sudden, sustained worsening of lower respiratory symptoms in patients with underlying chronic obstructive pulmonary disease (COPD) or chronic bronchitis, driven by a bacterial infection of the tracheobronchial tree This clinical state affects adults with pre-existing airflow limitation and is characterized by heightened airway inflammation, hypersecretion of mucus, and dynamic hyperinflation Pathophysiolog...

An acute exacerbation of obstructive chronic bronchitis by *Streptococcus pneumoniae* is a sudden, sustained worsening of lower respiratory symptoms in patients with underlying chronic obstructive pulmonary disease (COPD) or chronic bronchitis, driven by a bacterial infection of the tracheobronchial tree This clinical state affects adults with pre-existing airflow limitation and is characterized by heightened airway inflammation, hypersecretion of mucus, and dynamic hyperinflation Pathophysiolog...

Pathophysiologically, proliferation of the Gram-positive pathogen *S. pneumoniae* triggers acute neutrophilic infiltration into the bronchial mucosa, resulting in defining features that include increased dyspnea, increased sputum volume, and sputum purulence beyond the patient's baseline day-to-day variability