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  • Title: The Practical Role of FEF25-75 in Young Patients with Allergic Rhinitis.
    Author: Cirillo I, Schiavetti I, Ricciardolo FLM, Miraglia Del Giudice M, Tosca MA, Ciprandi G.
    Journal: Am J Rhinol Allergy; 2023 Sep; 37(5):571-574. PubMed ID: 37309103.
    Abstract:
    Allergic rhinitis (AR) is a relevant risk factor asthma as it may frequently precede asthma onset. There is evidence that lung function may be early impaired in AR patients. In this regard, the forced expiratory flow at 25%-75% of vital capacity (FEF25-75) could be a reliable marker of bronchial impairment in AR. Therefore, the present study investigated the practical role of FEF25-75 in young people with AR. The parameters included history, body mass index (BMI), lung function, bronchial hyperresponsiveness (BHR), and fractional exhaled nitric oxide (FeNO). This cross-sectional study included 759 patients (74 females and 685 males, mean age of 29.2 years) suffering from AR. The study demonstrated a significant association between low FEF25-75 values and BMI (OR 0.80), FEV1 (OR 1.29), FEV1/FVC (OR 1.71), and BHR (OR 0.11). Stratifying the patients on the basis of the presence (or absence) of BHR, sensitization to house dust mites (OR 1.81), AR duration (OR 1.08), FEF25-75 (OR 0.94), and FeNO (OR 1.08) were associated with BHR. Stratifying patients based on high FeNO values (>50 ppb), BHR was associated with high FeNO (OR 39). In conclusion, the present study showed that FEF25-75 was associated with low FEV1 and FEV1/FVC and BHR in AR patients. Therefore, spirometry should be considered in the long-term workup of patients with allergic rhinitis as impaired FEF25-75 might suggest an initial progression toward asthma.
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