Operator's Manual

Rad-97 Chapter 1: Technology Overview
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Successful Monitoring for SpCO
A stable SpCO reading is associated with correct sensor placement, small physiological
changes during the measurement and acceptable levels of arterial perfusion in the patient's
fingertip (measurement site). Physiological changes at the measurement site are mainly
caused by fluctuations in the oxygen saturation, blood concentration and perfusion.
General Description for Methemoglobin (SpMet)
Pulse CO-Oximetry is a continuous and noninvasive method of measuring the levels of
methemoglobin saturation (SpMet) in arterial blood. It relies on the same basic principles of
pulse oximetry (spectrophotometry) to make its SpMet measurement.
The measurement is obtained by placing a sensor on a patient, usually on the fingertip for
adults and the hand or foot for infants. The sensor connects either directly to the Pulse
CO-Oximetry device or through a patient cable.
The sensor collects signal data from the patient and sends it to the device. The device
displays the calculated data as percentage value for the SpMet.
Successful Monitoring for SpMet
A stable SpMet reading is associated with correct sensor placement, small physiological
changes during the measurement and acceptable levels of arterial perfusion in the patient’s
fingertip (measurement site).
Physiological changes at the measurement site are mainly caused by fluctuations in the
oxygen saturation, blood concentration and perfusion. See Safety Information, Warnings and
Cautions on page 13.
General Description for Respiration Rate (RRp)
RRp is currently not available in the U.S.A. and territories relying on FDA market
clearance.
Respiration rate can be determined by the plethysmographic waveform (RRp). This method
measures respirations per minute (rpm) based on plethysmographic amplitude changes that
correspond to the respiratory cycle.
General Description for Oxygen Reserve Index (ORi)
ORi is currently not available in the U.S.A. and territories relying on FDA market clearance.
ORi is a continuous and noninvasive index for measuring directional trends in oxygenation in
moderate hyperoxic conditions. ORi is intended to be used in conjunction with SpO
2
monitoring. ORi relies on the same principles of pulse oximetry. When ORi is indicated as 0,
SpO
2
should be used solely for monitoring changes in oxygenation. Directional ORi changes
greater than 0.04 have been validated to greater than 80% concordance to directional
changes in PaO
2
greater than 10mmHg.