Pulse Oximetry Readings and Hourly Variation in Oximetry Readings With CHD

The aim of this study is to describe the presenting pulse oximetry reading in patients who have a known lesion which will cause them to have a low presenting oximetry reading. The study hypothesis is that there is a low presenting pulse oximetry in patients with congenital heart disease and that there will be no significant variation in the hourly variation in oximetry readings in these patients.