Abstract:
BACKGROUND:Retrospective studies provide evidence that rhinitis is associated with more severe asthma. The aim of this study was to evaluate prospectively whether rhinitis is a predictor of increased asthma severity. METHODS:Five hundred and fifty-seven patients with severe asthma were enrolled. During 1 year of follow-up, each patient was evaluated every 3 months with a record of emergency room visits and supply of topical corticosteroids for asthma and rhinitis. In the 1 year of follow-up visit, the patients were checked for rhinitis diagnosis, severity and answered questionnaires for asthma symptoms and quality of life. RESULTS:Eighty-two (15%) patients had no rhinitis, 299 (54%) had mild rhinitis and 176 (31%) moderate/severe rhinitis. In logistic regression models, moderate/severe rhinitis was a predictor for any emergency room visit in the follow-up period [3.83 (2.00-7.35)], for the presence of uncontrolled asthma after 1 year of follow-up [12.68 (1.73-92.85)], for <10% improvement of the airway obstruction [2.94 (1.48-5.85)] and <50% reduction in the number of emergency room visits [2.90 (1.02-8.26)] in the year of follow-up. It was also associated with a smaller chance of more than 90% reduction in the number of emergency room visits in the year of follow-up [0.27 (0.12-0.60)]. In a multivariate linear regression model, severity of rhinitis was positively correlated with a score of asthma severity and inversely correlated to an index of quality of life. CONCLUSIONS:In a population with severe asthma, moderate/severe rhinitis is a strong predictor for greater severity of asthma.
journal_name
Allergyjournal_title
Allergyauthors
Ponte EV,Franco R,Nascimento HF,Souza-Machado A,Cunha S,Barreto ML,Naspitz C,Cruz AAdoi
10.1111/j.1398-9995.2007.01624.xsubject
Has Abstractpub_date
2008-05-01 00:00:00pages
564-9issue
5eissn
0105-4538issn
1398-9995pii
ALL1624journal_volume
63pub_type
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