LAUSR

We aimed to determine the 30-day (early) readmission risk factors of patients with severe acute exacerbation of chronic obstructive pulmonary disease (AECOPD) in a naturalistic follow-up sample. Fifty-seven patients hospitalized between 2018-2020 with severe AECOPD were recruited after excluding pneumonia, pulmonary embolism, and asthma/COPD overlap. Clinical variables, laboratory values and Charlson Comorbidity Index were also obtained. On the 30th-day of hospital discharge, all subjects were interviewed by a phone call to ask their readmission status. Mean age was 70.1±7.9 years and 70.2% were group D patients of GOLD assessment. Of twenty patients (35.1%) readmission group (RG), AECOPD (n=13, 65.0%) was the most common cause of readmission and 19 (95%) patients were in group D. RG had higher values of CAT scores than the non-RG (29.1±8.3 vs. 23.6±9.4 p=0.03). Long-term home non-invasive ventilation use was more common in patients RG than those in non-RG (55.0% vs 27.0%, p=0.04). C-reactive protein (CRP), hemoglobin and hematocrit levels was significantly lower in RG compared to non-RG (For CRP levels, 34.8±44.5 mg/L vs. 85.8±78.8 mg/L p