RT Journal Article SR Electronic T1 How to use saturation monitoring in newborns JF Archives of disease in childhood - Education & practice edition JO Arch Dis Child Educ Pract Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP edpract-2017-313499 DO 10.1136/archdischild-2017-313499 A1 Steven McVea A1 Michael McGowan A1 Bharathi Rao YR 2018 UL http://ep.bmj.com/content/early/2018/05/10/archdischild-2017-313499.abstract AB Pulse oximetry is a first-line monitoring tool, used in neonatal medicine routinely as a part of continuous monitoring during intensive care. It is also used to guide response to resuscitation and as a screening tool for congenital heart disease. Despite its widespread use, many healthcare providers are unaware of the underlying principles and limitations of pulse oximetry in neonates. In this article, we will discuss the physiological and technological principles behind the use of saturation monitoring and its use in neonatal practice.