• Muhammed Nebi Caliskan, Mehmet Tekin, and Capan Konca.
• Department of Pediatrics, School of Medicine, Adıyaman University, Adiyaman, Turkey.
• Int. J. Clin. Pract. 2021 Nov 1; 75 (11): e14760.

BackgroundThe aim of this study was to determine the predictive risk factors for development of severe bronchiolitis in patients with acute bronchiolitis with no previous chronic disease.MethodsFour hundred forty children aged 1-24 months hospitalised with acute bronchiolitis, were examined between February 2018 and February 2019 in this prospective study.ResultsEighty-five cases were regarded as severe bronchiolitis and 355 as mild-moderate bronchiolitis. Statistically significant differences were observed between the severe and mild-moderate bronchiolitis groups in terms of weight-for-age z-scores, history of bronchiolitis, haemoglobin levels, and time elapsed between the onset of symptoms and admission. Weight-for-age z-scores, the mean time interval between the onset of symptoms and admission, and mean haemoglobin values were lower in the severe bronchiolitis group while the mean number of bronchiolitis attacks was higher than in the mild-moderate bronchiolitis group. Logistic regression analysis determined that a low weight-for-age z-score increased the risk of severe bronchiolitis development 0.56-fold (CI: 0.409-0.760), a short duration between the onset of symptoms and admission increased the risk 0.62-fold (CI: 0.519-0.735), a frequent history of bronchiolitis increased the risk 1.81-fold (CI: 1.135-2.968) and low haemoglobin levels increased the risk 0.72-fold (CI: 0.537-0.969).ConclusionLow weight-for-age z-scores, a short duration between the onset of symptoms and admission, a high number of previous attacks and low haemoglobin levels were identified as independent parameters of severe bronchiolitis development.© 2021 John Wiley & Sons Ltd.

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