Clinical Focus ›› 2023, Vol. 38 ›› Issue (10): 904-906.doi: 10.3969/j.issn.1004-583X.2023.10.007

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Clinical analysis of subacute cough in patients with allergic rhinitis

Li Yuanpeng1a,1b, Chen Liang2, Liu Junan1a, Li Tianlin1a,1b()   

  1. 1a. Department of Respiratory Medicine, Xiamen 361000, China
    1b. Department of Allergology Consortium,Xiamen Changgung Hospital Affiliated to Huaqiao University,Xiamen 361000,China
    2. Department of Allergy,Huazhong University of Science and Technology Union Shenzhen Hospital,Shenzhen 518000,China
  • Received:2023-05-11 Online:2023-10-20 Published:2024-01-03
  • Contact: Li Tianlin E-mail:815468069@qq.com

Abstract: Objective To analyze the characteristics and severity of cough, as well as the increase in fractional exhaled nitric oxide (FeNO) and the treatment of subacute cough in patients with allergic rhinitis. Methods A total of 526 patients with subacute cough were divided into experimental group and control group according to the presence of allergic rhinitis or not. The severity of cough, FeNO, nocturnal cough and throat itching between the experimental group and control group were statistically analyzed. According to the FeNO test results and with the combination of allergic rhinitis, patients were further divided into subgroup A, B, C and D. They were treated with antitussive, antiallergic, inhaled corticosteroids alone or in the combination, followed by the analysis of the 1-week remission rate of cough. Results A total of 526 patients were included in the study, including 216 males with the mean age of (39.68±11.95) years and 310 females with the mean age of (38.18±12.17) years. There were 94 cases (17.9%) in the experimental group, including 46 males and 48 females, and 432 cases (82.1%) in the control group, including 171 males and 261 females. The median and quartile interval of cough severity score in the experimental group was significantly greater than those of control group (4 [2, 5] vs 3 [2, 5], Z=3.648, P=0.000). The ratio of increased FeNO (≥25 ppb) in the experimental group was significantly higher than that of control group (35.5% vs 23.6%, χ2=5.647, P=0.017). The positive rate of nocturnal cough and throat itching in the experimental group was significantly higher than that of control group (48.4% vs 36.1%, χ2=4.887, P=0.027). After one week of treatment, the cough relief rate of subgroup C was significantly lower than that of other groups, which was relatively high in subgroup A, B and D. Conclusion Allergic rhinitis patients combined with subacute cough have severer cough, eosinophilic airway inflammation or mixed airway inflammation, which is better responsive to the combination of antiallergic or inhaled corticosteroids.

Key words: cough, allergic rhinitis, fractional exhaled nitric oxide, nocturnal cough, throat itching

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