Mindray BeneHeart D3, Operator'S Manual

Page: 95 / 186

12-5
12.5.5 Changing the Speed of the Pleth Wave
In the [ SpO2 Setup ] menu, select [ Sweep ] and then select the appropriate setting. The faster the wave sweeps, the
wider the wave is.
12.6 SpO
2
Desat Alarm
The defibrillator/monitor provides an SpO
2
Desat alarm. The SpO
2
Desat alarm provides an additional limit setting below
the SpO
2
low limit setting to notify you of potentially life threatening decreases in oxygen saturation.
The SpO
2
Desat alarm is a high-level exclusive alarm. You cannot change its alarm level.
You can Press the Main Menu button on the front panel, and then select [ Alarm Setup >> ]
→
[ Para. Alarm >> ]
→
[ Desat ],
or select a parameter window and then select [ Para. Alarm >> ]
→
[ Desat ] to set the Desat alarm.
NOTE
z
In the case that the SpO
2
low limit alarm value is set below the Desat limit, the the SpO
2
low limit is
automatically adjusted to the Desat value.
12.7 Pitch Tone
The pitch tone function enables the equipment to give variable pitches of heartbeat tone or pulse tone as the patient’s
SpO
2
level changes. This equipment provides 22 levels of pitch tone. The pitch of heartbeat tone or pulse tone rises as
SpO
2
level increases and falls as SpO
2
level decreases.
There are two pitch tone modes. The select pitch tone mode, select [ SpO2 Setup ]
→
[ Pitch Tone ] from the Configuration
Main menu and toggle between [ Mode 1 ] and [ Mode 2 ].
If the SpO
2
is disabled, the pitch tone function will be disabled also.
12.8 Measurement Limitations
If you doubt the SpO
2
readings, check the patient’s vital signs first. Then check the equipment and SpO2 sensor. The
following factors may influence the accuracy of measurement:
„
Ambient light
„
Patient movement (active and imposed motion)
„
Diagnostic testing
„
Low perfusion
„
Electromagnetic interference, such as MRI environment
„
Electrosurgical units
„
Dysfunctional haemoglobin, such as carboxyhemoglobin (COHb)and methemoglobin (MetHb)
„
Presence of certain dyes, such as methylene and indigo carmine