Abstract
Introduction: Determining the severity of acute bronchiolitis in children is important for the clinical management of the disease. Therefore, we aimed to reveal their prognostic importance by examining cardiac markers in our patients with acute bronchiolitis.
Materials and Methods: We conducted a single-center retrospective, observational study with children with acute bronchiolitis between 1 month and 2 years of age, between December 2020 and December 2021, who were covid-19 PCR test negative and had no covid-19 contact. We scanned demographic, clinical and laboratory parameters from medical records.
Results: A total of 45 (44% female) children with acute bronchiolitis, a median (IQR) age of 5 (5) months were included in the study. There were 7 (16%) mild bronchiolitis, 23 (51%) moderate and 15 (33%) severe bronchiolitis patients. The cutoff point of Nt-proBNP to be ≥1025 ng/L to predict severe bronchiolitis with a sensitivity of 71% and a specificity of 80 % at admission in children with acute bronchiolitis.
Conclusion: We think that the threshold value for Nt-proBNP in the study can be used to identify patients with severe bronchiolitis in the early period and to reduce mortality and morbidity by earlier intervention.

Key words: Nt-proBNP, troponin-I, bronchiolitis, respiratory, children