Philips M3500B manual Monitoring SpO2, Acquired while monitoring, see Chapter

5 Monitoring SpO2

	Pulse oximetry is a noninvasive method of continuously measuring oxygen
	saturation (SpO2) in arterial blood. The resultant SpO2 reading indicates the
	percentage of hemoglobin molecules in the arterial blood which are saturated
	with oxygen. SpO2 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 HeartStart XLT to monitor
	SpO2.
	SpO2 monitoring is always available in Manual Mode (if the option is pur-
	chased). In AED Mode, SpO2 monitoring is only available if SpO2 is config-
	ured to 2Q.
	For information on printing, storing, and retrieving patient information
	acquired while monitoring, see Chapter 9.
WARNING	Do not rely solely on SpO2 readings; assess the patient at all times. SpO2 readings
	may be inaccurate in the presence of significant levels of carboxyhemoglobin or
	methemoglobin, in patients with restricted blood flow to the extremities (such as
	those in severe shock or hypothermia), or in the presence of excessive motion.

5

M3500B HeartStart XLT Defibrillator/Monitor 5-1