Abstract:Objective To investigate the relationship between laryngopharyngeal reflux (LPR) and inflammatory factors and acute exacerbation of chronic obstructive pulmonary disease (COPD). Methods From June 2017 to July 2018, 387 patients with COPD were selected as subjects, including 185 patients with acute exacerbation and 202 patients with stable phase; another 67 healthy subjects in our hospital from June 2017 to July 2018 were selected as control group. The reflux symptom index and reflux sign index were measured with carbon 13 breath test; tumor necrosis factor-a (TNF-a), interleukin-2 (IL-2), interleukin-6 (IL-6) and interleukin-8 (IL-8) were measured by enzyme linked immunosorbent assay (ELISA) content. Results The reflux symptom index score and reflux sign index score of the acute aggravation group were higher than those of the stable group and the control group (P < 0.05). The scores of reflux symptom index and reflux sign index in the stable group were higher than those in the control group (P < 0.05). Serum levels of TNF-a, IL-6 and IL-8 in acute exacerbation group were higher than those in stable group and control group, while serum levels of IL-2 were lower than those in stable group and control group.There was no significant difference in inflammatory factors between the stable group and the control group (P > 0.05). The reflux symptom index and reflux sign index were positively correlated with TNF-a, IL-6 and IL-8 (P > 0.05), but negatively correlated with IL-2 (P > 0.05). Conclusions LPR and inflammatory factors were highly correlated with acute exacerbation of COPD, and LPR was positively correlated with TNF-a, IL-6 and IL-8, but negatively correlated with IL-2.