• 1. Guizhou Medical University, Guiyang, Guizhou 550025, P. R. China;
  • 2. Department of Respiratory and Critical Care Medicine, Guizhou Provincial Peoples’s Hospital, Guiyang, Guizhou 550002, P. R. China;
  • 3. Key Laboratory of Diagnosis and Treatment of Pulmonary Immune Diseases, National Health and Construction Commission, Guiyang, Guizhou 550002, P. R. China;
ZHANG Cheng, Email: 315861985@qq.com
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Objective  To investigate the characteristics of micro-biology in the respiratory tract in the patients who were suffering acute exacerbation of chronic obstructive pulmonary disease (AECOPD) with/without their respiratory failures as well as with the high/low frequency of exacerbation. Methods Sixty confirmed subjects in the Department of Respiratory and Critical Care in Guizhou Provincial Hospital from Nov. 2021 to Mar. 2022 were chosen and then divided them into two pairs of sub-groups randomly. Sub-group pairs one were based on the frequency of AECOPD: higher frequency and lower frequency. Sub-group pairs two were based on whether the patients were once with respiratory failure or not. 16S rRNA high-throughput sequencing method was used to detect sputum microecology. The Alpha and Beta diversity of each subgroup, and the differences in bacterial composition and relative abundance, were compared. Results  For the AECOPD group with low-frequent of exacerbation, its diversity and abundance of microbiology were higher than those group with high-frequent of exacerbation. The group of AECOPD with respiratory failure had lower bacteria micro diversity but abundancy was higher than those group without respiratory failure. Conclusion The frequency of AECOPD and whether it is with respiratory failure is related to the change of micro-biology in respiratory tract, so such change plays a great role in this disease.

Citation: CHEN Wen, ZHANG Xiangyan, YE Xianwei, DONG Han, ZHANG Cheng. The impact of COPD with frequent acute exacerbation and respiratory failure on micro-biology in the respiratory tract. Chinese Journal of Respiratory and Critical Care Medicine, 2023, 22(5): 305-310. doi: 10.7507/1671-6205.202208065 Copy

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