A new ultrasound marker for bedside monitoring of preterm brain growth

BACKGROUNDANDPURPOSE: Preterm neonates are at risk for neurodevelopmental impairment, but reliable, bedside-Available markers to monitor preterm brain growth during hospital stay are still lacking. The aim of this study was to assess the feasibility of corpus callosum-fastigium length as a new cranial sonography marker for monitoring of preterm brain growth. MATERIALS AND METHODS: In this longitudinal prospective cohort study, cranial ultrasound was planned on the day of birth, days 1, 2, 3, and 7 of life; and then weekly until discharge in preterm infants born before 29 weeks of gestational age. Reproducibility and associations between clinical variables and corpus callosum-fastigium growth trajectories were studied. RESULTS: A series of 1- 8 cranial ultrasounds was performed in 140 infants (median gestational age at birth, 27⁺² weeks (interquartile range, 26⁺¹ to 28⁺¹; 57.9% male infants). Corpus callosum-fastigium measurements showed good-To-excellent agreement for interand intraobserver reproducibility (intraclass correlation coefficient >0.89). Growth charts for preterm infants between 24 and 32 weeks of gestation were developed. Male sex and birth weight SD score were positively associated with corpus callosum-fastigium growth rate. CONCLUSIONS: Corpus callosum-fastigium length measurement is a new reproducible marker applicable for bedside monitoring of preterm brain growth during neonatal intensive care stay.