Importance: Repeated transfusions in preterm neonates with anemia of prematurity replace fetal hemoglobin (HbF) with adult Hb (HbA), which has a low oxygen affinity. The reduction of HbF is associated with a higher incidence of retinopathy of prematurity (ROP).
Objective: To assess whether HbF and HbA are differently associated with cerebral tissue oxygenation in preterm neonates.
Objective: To investigate the relationship between cardiac function and extubation readiness in infants using speckle tracking echocardiography.
Working Hypothesis: Cardiac function combined with established clinical parameters may better identify readiness for extubation.
Study Design: Pilot prospective observational study.