Operator's Manual

Radical-7 Chapter 6: Alarms and Messages
www.masimo.com 159 Masimo
Options Description Factory
Default
Settings
User Configurable
Settings
Delta See
Desat Index Alarm
Overview
on page 157.
4%
2% to 10% in steps of
1%.
Time See
Desat Index Alarm
Overview
on page 157.
1 hour 1 to 4 hours, in steps
of 1.
# of
Events
See
Desat Index Alarm
Overview
on page 157.
Off Off, 1 to 24
desaturations in steps
of 1.
Perfusion Index (PI) Delta Alarm Overview
The Perfusion Index (PI) Delta Alarm is a user-selectable feature which
allows a clinician to request an audible and visual alarm if perfusion at
the monitored site decreases by a specified level (delta) over a specific
period of time.
Perfusion Index gives an indication of the level of perfusion at the
monitored site. The Radical-7 measures perfusion at the SpO
2
site by
comparing the pulsatile signal to the non-pulsatile signal, and expressing
that ratio as a percentage. PI has been clinically proven to be useful as a
predictor of the level of illness in neonates and adults and that PI may
change dramatically in response to sympathetic changes caused by
inhalational agents and pain stimulation.* If PI decreases over time, there
may be underlying physiological reasons that may need to be addressed.