Send us Fan Mail What FiO2 should you start at for a 34-week preterm infant who needs help breathing at birth? On this Journal Club, Ben reviews the AIROPLANE trial, a cluster randomized crossover study across 26 Australian maternity hospitals comparing initial FiO2 of 30% versus 21% in 1,818 infants born at 32 to 35 weeks. Ongoing respiratory support leaving the delivery room was nearly identical between groups, but infants started at 30% needed less escalation in the delivery room and less ...