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- Title
Prevalence and Clinical Relevance of Allergic Rhinitis in Patients with Classic Asthma and Cough Variant Asthma.
- Authors
Tajiri, Tomoko; Niimi, Akio; Matsumoto, Hisako; Ito, Isao; Oguma, Tsuyoshi; Otsuka, Kojiro; Takeda, Tomoshi; Nakaji, Hitoshi; Inoue, Hideki; Iwata, Toshiyuki; Nagasaki, Tadao; Mishima, Michiaki
- Abstract
Background: A clinically relevant relationship between classic asthma and allergic rhinitis has been reported. However, the possible link between cough variant asthma (CVA) and allergic rhinitis remains unknown. Objectives: To clarify the prevalence and clinical relevance of perennial allergic rhinitis or seasonal allergic rhinitis in CVA patients compared to classic asthma patients. Methods: We retrospectively studied adult patients with classic asthma (n = 190) and those with CVA (n = 83). The prevalence of perennial allergic rhinitis or seasonal allergic rhinitis and associations of concomitant perennial or seasonal allergic rhinitis with asthma severity, forced expiratory volume in 1 s (% predicted), fractional exhaled nitric oxide (FeNO) levels, and eosinophil proportions in sputum and blood were analyzed in the two groups. Results: The prevalence of perennial allergic rhinitis and/or seasonal allergic rhinitis was significantly higher in classic asthma patients than in CVA patients (all p < 0.05). Concomitant perennial allergic rhinitis was associated with higher FeNO levels and eosinophil proportions in sputum and blood in classic asthma patients (p = 0.035, p = 0.036, and p = 0.008, respectively) and with higher asthma severity, FeNO levels, and sputum eosinophil proportions in CVA patients (p = 0.031, p = 0.007, and p = 0.010, respectively). Concomitant seasonal allergic rhinitis was only associated with higher sputum eosinophil proportions in CVA patients with active rhinitis symptoms during the sensitized pollen season (p = 0.025). Conclusions: Perennial allergic rhinitis may be relevant for CVA patients as well as classic asthma patients by consistently augmenting eosinophilic lower airway inflammation. © 2013 S. Karger AG, Basel
- Subjects
ASTHMA diagnosis; ASTHMA risk factors; COUGH diagnosis; RHINITIS; ADRENOCORTICAL hormones; ANTIHISTAMINES; ASTHMA; CHI-squared test; EOSINOPHILS; IMMUNOGLOBULINS; MEDICAL needs assessment; NITRIC oxide; QUESTIONNAIRES; RESPIRATION; STATISTICS; DATA analysis; RETROSPECTIVE studies; DISEASE duration; METHACHOLINE chloride; DIAGNOSIS
- Publication
Respiration, 2014, Vol 87, Issue 3, p211
- ISSN
0025-7931
- Publication type
Article
- DOI
10.1159/000355706