Clinical evidence suggests that AECOPD may be an important factor in the cause of death in patients with COPD. AECOPD typically presents with increased dyspnea, cough, and sputum volume, or purulent changes in sputum. The most common factors of AECOPD are viral and bacterial infections. Anti-infection agents have shown to be effective in patients with infectious AECOPD.~This study will assess the anti-bacterial drug sitafloxacin in participants with AECOPD. Clinical efficacy is the primary objective of the study. Microbiological validity, symptom relief, magnitude of change in symptom score and inflammatory biomarker, and recurrence rate and safety will also be assessed.
Chronic obstructive pulmonary disease (COPD) is a common, preventable, and treatable disease, that causes obstructed airflow from the lungs that causes persistent obstructive airflow limitation.~Acute exacerbation, especially frequent exacerbation, is associated with an increased risk of death in COPD patients. The most common causes of acute attacks are viral and bacterial infections.~This study will assess the efficacy and safety of sitafloxacin, a quinolone antibacterial drug, in participants with AECOPD.