Operator's Manual

Table Of Contents
Radical-7 Chapter 1: Technology Overview
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Successful Monitoring for ORI
A stable ORi* reading is associated with correct sensor placement, small
physiological changes during the measurement and acceptable levels of
arterial perfusion at the measurement site. Physiological changes at the
measurement site are mainly caused by fluctuations in the oxygen
saturation, blood concentration and perfusion. See
Warnings and
Cautions
on page 15 and
Troubleshooting Measurements
on page 171.
*Available only on Root display
SpCO, SpMet, and SpHb Measurements During Patient
Motion
The Radical-7 displays measurements of SpCO, SpMet, and SpHb during
patient motion. However, because of the changes in the physiological
parameters such as blood volume, arterial-venous coupling, etc. that
occur during patient motion, the accuracy of such measurements may not
be reliable during excessive motion. In this case, the measurement value
for SpCO, SpMet, or SpHb displays as dashes (---) and a message (
Low
SpCO SIQ
,
Low SpMet SIQ
, or
Low SpHb SIQ
) displays to alert the
clinician that the device does not have confidence in the value due to
poor signal quality caused by excessive motion or other signal
interference.
rainbow Acoustic Monitoring (RAM) Technology
rainbow Acoustic Monitoring™ (RAM) continuously measures a patient’s
respiration rate based on airflow sounds generated in the upper airway.
The Acoustic Sensor, which is applied on the patient's neck, translates
airflow sounds generated in the upper airway to an electrical signal that