PT - JOURNAL ARTICLE AU - Steven McVea AU - Michael McGowan AU - Bharathi Rao TI - How to use saturation monitoring in newborns AID - 10.1136/archdischild-2017-313499 DP - 2018 May 10 TA - Archives of disease in childhood - Education & practice edition PG - edpract-2017-313499 4099 - http://ep.bmj.com/content/early/2018/05/10/archdischild-2017-313499.short 4100 - http://ep.bmj.com/content/early/2018/05/10/archdischild-2017-313499.full 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.