Changing the SPO2 Waveform Amplitude
The vertical scale of the displayed SPO2 waveform can be changed to best suit the viewing
To change the SPO2 waveform amplitude
6‐10 Monitoring SPO2 Expression MR400 Instructions for Use
SPO2 monitoring requires the detection of valid pulses to correctly determine SPO2
and heart rate values. Any of the following items can lead to inaccuracies of the SPO2
readings and/or prolonged measurement time: Ambient light (including photodynamic
therapy), physical movement (patient and imposed motion), arrhythmias and/or
erratic heartbeats, diagnostic testing, electromagnetic interference, electrosurgical
units, dysfunctional hemoglobin, intravascular dyes, presence of dyes or pigments at
the application site, and inappropriate positioning of the pulse oximeter attachment. If
questionable readings are obtained, check the patient's vital signs by alternate means
before administering medication.
Attachment movement, ambient light (especially strobe or flashing lights) or
electromagnetic interference can give unexpected intermittent readings when the
probe is not attached to a patient. Bandage and grip attachment designs are
particularly sensitive to minimal movement that might occur when the probe is
dangling, not attached to the patient. An unapplied probe may cause readings to be
displayed on the monitor. To avoid misdiagnosis, ensure the probe is applied to patient
Select the SPO2 VS box.
The SPO2 menu appears. Current settings are displayed.
The Size menu appears. The current setting is highlighted.
Select the desired size:
The setting is changed.