ZOLL Propaq MD Rev A - Manual (Page 113)

9650-0805-01 Rev. A Propaq MD Operator’s Guide 9-1
Chapter 9
Monitoring Pulse Oximetry (SpO
2
)
The Propaq MD SpO
2
input is Type CF defibrillator proof.
This chapter describes how to use the Propaq MD unit to monitor Pulse Oximetry (SpO
2
).
The Propaq MD pulse oximeter continuously and noninvasively measures the oxygen
saturation (SpO
2
) of arterial blood at a peripheral site, such as the foot, toe, or finger. It is used
to monitor patients at risk of developing hypoxemia. This option is widely used because it is
noninvasive, continuous, easily applied, and painless.
The oximeter sensor contains two emitters that transmit red and infrared light through the
monitored site. This light passes through the patient’s tissues and is received by a photodetector
in the sensor. Because oxygen-saturated blood absorbs light differently than unsaturated blood,
the amount of red and infrared light absorbed by blood flowing through the monitored site can
be used to calculate the ratio of oxygenated hemoglobin to total hemoglobin in arterial blood.
The monitor displays this ratio as percent SpO
2
. Normal values typically range from 95% to
100% at sea level.
The quality of SpO
2
measurements depends on the correct size and application of the oximetry
sensor, adequate blood flow through the sensor site, and the sensor’s exposure to ambient light.
For correct placement and location of the sensors, refer to the Directions for Use contained in
all oximetry sensor packages.