• Department of Respiratory and Critical Care Medicine, Peking University People’s Hospital, Beijing 100044, P. R. China;
GAO Zhancheng, Email: zcgao@bjmu.edu.cn
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Objective To investigate the clinical characteristics and prognostic factors of influenza pneumonia from 2014 to early 2018.Methods The general information, clinical symptoms, laboratory examination and treatment of 69 patients with influenza pneumonia from October 2014 to March 2018 were collected. The clinical characteristics of 32 patients with influenza pneumonia from 2017 to 2018 were compared with 37 patients with influenza pneumonia from 2014 to 2016. The prognostic factors of influenza pneumonia were also investigated.Results The median patient age was 68 (55-78) years, and 41 cases (59.4%) were men in 69 patients. The five most common comorbidities were hypertension (44.9%), diabetes (23.3%), chronic obstructive pulmonary disease (17.4%), coronary atherosclerotic heart disease (13.0%), and chronic kidney disease (10.1%). The median levels of fasting blood glucose, lactate dehydrogenase, C-reactive protein, and procalcitonin in the patients with influenza pneumonia in 2017-2018 were significantly higher than those in the same period of 2014-2016, which were respectively 7.1 (5.4 - 8.3)mmol/L vs. 5.2 (4.5 - 7.3)mmol/L (P=0.017), 213.0 (98.0 - 320.5)U/L vs. 178 (98.0 - 280.0)U/L (P=0.049), 65.5 (15.4 - 139.8)mg/L vs. 45.5 (14.1 - 75.3)mg/L (P=0.050), 0.66 (0.24 - 1.58)μg/L vs. 0.17 (0.11 - 0.43)μg/L (P=0.004). The proportion of bacterial infection, septic shock, acute renal failure and mortality in the patients with influenza pneumonia in 2017-2018 was higher than that in the 2014-2016 group, which were respectively 40.6% vs. 18.9% (P=0.047), 21.9% vs. 5.4% (P=0.043), 21.9% vs. 2.7% (P=0.035), 31.3% vs. 5.4% (P=0.005). Multivariate analysis showed that numbers of lymphocytes, blood urea nitrogen, and procalcitonin were independent risk factors for mortality in the patients with influenza pneumonia. The odds ratio was respectively 0.001 (95%CI 0.00 - 0.200), 1.342 (95%CI 0.996 - 1.808), 1.113. (95%CI 1.006 - 1.230).Conclusions Compared with the patients with influenza pneumonia in 2014-2016, the patients in 2017-2018 have higher levels of fasting blood glucose and lactate dehydrogenase, and are also susceptible to secondary bacterial infection, septic shock, and acute renal failure. Decreased lymphocytes, elevated blood urea nitrogen, and elevated procalcitonin are independent risk factors for death in patients with influenza pneumonia.

Citation: WANG Youya, LI Ran, GAO Zhancheng. Clinical characteristics of 69 patients with influenza pneumonia from 2014 to 2018. Chinese Journal of Respiratory and Critical Care Medicine, 2020, 19(3): 251-257. doi: 10.7507/1671-6205.201908098 Copy

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