Lung ultrasound characteristics of late preterm and term infants shortly after birth
Objective To observe the characteristics and evolution of lung ultrasound images in late preterm and term infants during the intrauterine-to-extrauterine environmental transition stage.Methods Lung ultrasound images of 466 late preterm or term neonates born in Obstetrics and Gynecology Hospital ofFudan University from April to December 2019 were collected.Lung ultrasound was performed at one of following timings after birth:0.5 h,1.0 h,2.0 h and 4.0 h and images were saved.The neonates without the respiratory system disorders(conformed by a three-day follow-up)were enrolled in.Their images were retrospectively analyzed.Results A total of 393 neonates without the respiratory system diseases were eligible.The number of images was 109,107,141,and 36 of 0.5 h,1.0 h,2.0 h,and 4.0 h after birth.We found mainly three signs in their images:"A-line","Distribute B-line"and"Coalesced B-line".While the number of"Distribute B-line"and"Coalesced B-line"were decreased(P＜0.001),"A-line"were increased over the time(P＜0.001).The"Coalesced B-line"sign was found in two infants,respectively at 0.5 h and 1 h.Conclusion LUS is available to observe the physiological images of the late pre-term and term infants shortly after birth.The most common characteristics include"A-line","Distribute B-line"and"Coa-lesced B-line".These clues may be useful to avoid unnecessary treatment in LUS guided treatment protocol.
NETL
NSTL
万方数据
