Iron status and anemia as predictors for acute bronchiolitis severity

The aim of this study was to determine the effect of iron deficiency anemia (IDA) on the severity of symptoms in infants hospitalized for acute bronchiolitis. This is a case–control study, which was carried out on 80 infants from November 2022 to April 2023. The study involved 60 infants ranging in age from 2 months to 2 years, who were admitted to the Pediatric Pulmonology Unit and met the diagnostic criteria for acute bronchiolitis. Furthermore, a control group of 20 apparently healthy infants was incorporated into the study. This study showed that patients with moderate and severe bronchiolitis exhibited notably reduced levels of hemoglobin, HCT, MCV, MCH, and MCHC. Concerning the iron status, a substantial decrease in serum iron and increase in TIBC in the severe group (P = 0.012, 0.001, respectively). No substantial correlation was detected between the severity of acute bronchiolitis and serum ferritin levels. Hemoglobin and serum iron were found to be independent predictors of the severity of acute bronchiolitis. Infants suffering from IDA exhibit increased vulnerability to acute bronchiolitis. The low levels of hemoglobin and serum iron may function as prognostic indicators for the severity of the condition in infants with acute bronchiolitis.