US for ETT verification appears to be well tolerated in infants and children and may augment determination of proper ETT position in combination with other ETT verification modalities. Further studies are needed regarding technique and training. What is Known: • Point-of-care ultrasonography is realizing increased availability and use in several pediatric specialties. • Ultrasonography has been shown to be effective for verifying ETT position in adults but have been less studied in infants and children. What is New: • Ultrasonography for endotracheal tube verification appears to be well tolerated in infants and children. • Ultrasonography may augment determination of proper endotracheal tube position in combination with other verification modalities such as radiography and capnography in the pediatric population.

Ultrasonography (US) has been shown to be effective for verifying endotracheal tube (ETT) position in adults and older children but has been less studied in the neonates and infants. The literature regarding US utility for ETT positioning in this population is reviewed. A literature search was conducted using the EMBASE, Google Scholar, MEDLINE, Ovid, and Scopus databases with search terms regarding US relating to ETT intubation and positioning in neonates and infants. Nine relevant studies were included for review. All studies report > 80% visualization of the ETT tip by US. US interpretation of the ETT position correlated with the radiography position in 73 to 100% of cases when the ETT tip was visible. There were variations in technique, sonographer, and sonographer training between studies. US appears to be well tolerated by neonates and infants and may augment the determination of proper ETT position. Further studies are needed regarding optimal technique and sonographer training.

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