Pulse Oximetry: An Essential For Critical Care
Pulse oximetry is a rapid, noninvasive tool that can
provide continuous assessment of oxygenation and
is associated with few complications. It has become
the standard for continuous, noninvasive assessment
of oxygenation, such that is now known as the “fifth
vital sign”1-3. Theoretical and clinical aspects of pulse
oximetry will be reviewed here.