Objective: To explore the factors affecting survival of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods: Patients with AECOPD who were hospitalized form Jan. 2014 to Dec. 2015 in emergency department of Nanjing Chest Hospital were enrolled in this study. The general situation data, level of serum N-terminal pro-brain natriuretic peptid (NT-proBNP), arterial blood gas analysis (ABG) and blood biochemistry indexes were collected. The patients' conditions after discharge were followed up until December 31, 2017. The end point was death from chronic obstructive pulmonary disease.Results: Multivariate Cox regression analysis showed that serum NT-proBNP (HR=1.245, 95% CI 1.079-1.436, P=0.003), neutrophil percentage (HR=1.051, 95% CI 1.009-1.096, P=0.018)and PCO2 in ABG (HR=1.031, 95% CI 1.004-1.060, P=0.027) were independent risk factors for survival and prognosis of AECOPD patients, while serum albumin was a protective factor(HR=0.868,95% CI 0.774-0.975,P=0.017). Receiver operating characteristic curve showed that using NT-proBNP=1 575.50 pg·ml-1 as the cut-off value, the area under curve (AUC) to quite precisely predict survival prognosis was 0.845 (sensitivity 0.833, specificity 0.786).Conclusion: Serum NT-proBNP, neutrophil percentage and PCO2 in ABG were the risk factors for AECOPD, while serum albumin level was the protective one. |