User's Manual

Table Of Contents
Radical-7 Chapter 4: Operation
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Respiration Rate (RR)
The Radical-7 can determine respiration rate (RR) either by the acoustic signal (RRa) or by
the plethysmographic waveform (RRp).
RRp Settings
When using a pulse oximetry or pulse CO-Oximetry sensor with the Radical-7, respiration rate
can be determined by the plethysmographic waveform (RRp). This method measures a
patient's respiratory rate based on plethysmographic amplitude changes that correspond to
the respiratory cycle. When using a pulse oximetry or pulse CO-Oximetry sensor, RRp alarms
and RRp settings are active and the Display View conveys respiratory rate as RRp, as shown
below.
Note that the Radical-7 can monitor RRa or RRp but not both simultaneously. RRp is active
under the following conditions:
RRp is installed on the Radical-7.
Dual Rainbow cable is disconnected.
Pulse oximetry or pulse CO-Oximetry sensor is connected.
Acoustic sensor is not connected.
When using an acoustic sensor, respiration rate (RR) is determined by the acoustic (RRa)
signal. See rainbow Acoustic Monitoring (RAM) Technology on page 29. When the
respiratory rate is determined by the acoustic signal, the Display View conveys respiratory
rate as RRa, as shown below.
From the RR Settings screen, access any of the following screens:
RRp Alarms on page 67.
Additional Settings for RRp on page 68.
RRp Alarms
From the Alarms screen, change any of the following options: