Chapter 10 Pulse Co-Oximetry (Spo 2 , Spco, And Spmet) - ZOLL Propaq MD Operator's Manual

Chapter 10
Pulse CO-Oximetry (SpO , SPCO, and SpMet)
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The Propaq MD SpO input is Type CF defibrillator proof.
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This chapter describes how to use the Propaq MD unit to monitor Pulse CO-Oximetry (SpO ),
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as well as the optional features: SpCO and SpMet.
The Propaq MD pulse CO-Oximeter continuously and noninvasively measures the oxygen
saturation of arterial hemoglobin (SpO ), carboxyhemoglobin saturation (SpCO), and
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methemoglobin saturation (SpMet) at a peripheral site, such as the foot, toe, or finger. This
monitoring gives information about the cardiac and respiratory systems, and provides details of
oxygen transportation in the body. It is widely used because it is noninvasive, continuous,
easily applied, and painless.
The Propaq MD pulse CO-oximetry option is intended for use only with ZOLL / Masimo
Rainbow sensors. The CO-oximetry sensor contains light-emitting diodes (LEDs) that transmit
various visible and infrared light through the body's extremities. The transmitted light is then
received by a photodetector, which converts it to an electronic signal. The signal is then sent to
the Propaq MD unit for processing.
Oxygen-saturated blood absorbs light differently than unsaturated blood. Thus the amount of
visible and infrared light absorbed by blood flowing through a suitable peripheral area of the
body, typically the finger in adults and the foot in neonates, can be used to calculate the ratio of
oxygenated hemoglobin to total hemoglobin in arterial blood. The monitor displays this ratio as
percent SpO , alternating with SpCO and SpMet values. Normal SpO values typically range
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from 95% to 100% at sea level. The SpCO and SpMet measurements rely on multiwavelength
calibration equations to estimate the percentages of carboxyhemoglobin and methemoglobin in
arterial blood.
The quality of measurements depends on the correct size and application of the 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 with all
Rainbow oximetry sensor packages.
9650-0806-01 Rev. D Propaq MD Operator's Guide 10-1