Rhinosinusitis Predispose Asthmatic Patients to Severe Bronchial Asthma

In this study, we evaluated the relationship between rhinosinusitis to the severity ofasthma in asthmatic patients.this cross-sectional study was conducted on 90 patients with asthma referring to imamkhomeini hospital in ardabil city. asthma control stepping method was used for staging ofasthma severity. patients' clinical signs and paraclinical findings were individually evaluatedand compared with particular attention to the presence or absence of rhinosinusitis. chisquare and t-test were used to analyze the data in spss15 software.rhinosinusitis was found in 66 (73%) of the 90 patients. the forced expiratory volumein 1 second (fev1) was significantly lower in the patients who also had rhinosinusitis(p=0.002).comparing severity of asthma, most of the patients with rhinosinusitis were instage3 (42.4%) but most of the patients without rhinosinusitis were in stage1 (41.6%)(p=0.002).the results of this study confirm the correlation between asthma severity andrhinosinusitis in asthmatic patients. therefore, in diagnosing asthma in patients, thepossibility of the rhinosinusitis should be determined and treated.