Fetal haemoglobin and oxygen requirement in preterm infants : an observational study
OBJECTIVE: To investigate the relationship between the fraction of fetal haemoglobin (HbF(%)) and oxygen requirement as determined by the fraction of inspired oxygen (FiO2) and alveolar-arterial gradient (A-a gradient). Increased alveolar exposure to oxygen may explain the association between decreased HbF(%) and the development of bronchopulmonary dysplasia (BPD).DESIGN: Longitudinal, retrospecti
