Introduction
5-2 Monitoring SpO2
Introduction
Pulse oximetry is a noninvasive method of continuously measuring oxygen
saturation (SpO
2
) in arterial blood. The resultant SpO
2
reading indicates the
percentage of hemoglobin molecules in the arterial blood which are saturated
with oxygen. SpO
2
monitoring is one of the tools available to assist in assess-
ing a patient’s cardiac and respiratory systems. This chapter explains how
pulse oximetry works and describes how to use the Heartstream XL to moni-
tor SpO
2.
SpO
2
monitoring is always available both in AED and Manual Mode (if the
option is purchased).
For information on printing, storing, and retrieving patient information
acquired while monitoring, see Chapter 9.
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