Fig. 1

Flow chart of REGULATE study. AECOPD: acute exacerbation of chronic obstructive pulmonary disease; BGAV: a scoring system for AECOPD patients, B: bronchodilator; G: glucocorticoid; A: antibiotic; V: ventilation;
Flow chart of REGULATE study. AECOPD: acute exacerbation of chronic obstructive pulmonary disease; BGAV: a scoring system for AECOPD patients, B: bronchodilator; G: glucocorticoid; A: antibiotic; V: ventilation;