International journal of chronic obstructive pulmonary disease · 2022
The Influence of Influenza Virus Infections in Patients with Chronic Obstructive Pulmonary Disease.
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Liao Kuang-Ming, Chen Yi-Ju, Shen Chuan-Wei, Ou Shao-Kai, Chen Chung-Yu
Аннотация
INTRODUCTION: Chronic obstructive pulmonary disease (COPD) is a common disease and is preventable and treatable. A previous study showed that influenza virus infections were also associated with the risk of acute exacerbation in patients with COPD, and other studies showed that the influenza virus might increase the risk of stroke. However, studies on the influence of influenza infection among COPD patients are limited. In this study, we review the role of influenza infection in contributing to mortality, pneumonia, respiratory failure, COPD acute exacerbation, and ischemic stroke among COPD patients.
MATERIALS AND METHODS: We performed a population-based cohort study of COPD patients using data from Taiwan between January 1, 2011, and December 31, 2019. We excluded patients with lung cancer, lung transplantation and asthma. We also excluded patients who lacked COPD medication prescriptions and those treated with anti-influenza drugs without flu diagnosis records. Patients with missing or incomplete data were also excluded from the study cohort.
RESULTS: After 1:1 matching by age, sex, COPD duration, diagnosed years and comorbidities, we enrolled 10,855 cases and controls for further analysis. The risks of pneumonia, respiratory failure, COPD acute exacerbation, and ischemic stroke were 1.770 (95% CI=1.638-1.860; P<0.0001), 1.097 (95% CI=1.008-1.194; P=0.0319), 1.338 (95% CI=1.248-1.435; P<0.0001), and 1.134 (95% CI=1.039-1.239, P=0.0051), respectively, in the influenza infection group compared with COPD patients without influenza infection.
CONCLUSION: Influenza infections are linked to an increased risk of ischemic stroke, pneumonia, respiratory failure, and COPD acute exacerbation among COPD patients. In conclusion, patients with COPD need to be closely monitored after having an influenza infection.
MATERIALS AND METHODS: We performed a population-based cohort study of COPD patients using data from Taiwan between January 1, 2011, and December 31, 2019. We excluded patients with lung cancer, lung transplantation and asthma. We also excluded patients who lacked COPD medication prescriptions and those treated with anti-influenza drugs without flu diagnosis records. Patients with missing or incomplete data were also excluded from the study cohort.
RESULTS: After 1:1 matching by age, sex, COPD duration, diagnosed years and comorbidities, we enrolled 10,855 cases and controls for further analysis. The risks of pneumonia, respiratory failure, COPD acute exacerbation, and ischemic stroke were 1.770 (95% CI=1.638-1.860; P<0.0001), 1.097 (95% CI=1.008-1.194; P=0.0319), 1.338 (95% CI=1.248-1.435; P<0.0001), and 1.134 (95% CI=1.039-1.239, P=0.0051), respectively, in the influenza infection group compared with COPD patients without influenza infection.
CONCLUSION: Influenza infections are linked to an increased risk of ischemic stroke, pneumonia, respiratory failure, and COPD acute exacerbation among COPD patients. In conclusion, patients with COPD need to be closely monitored after having an influenza infection.