Bistos BT-780, Operation Manual

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BT-780 Operation manual
31
P/N : 780-ENG-OPM-EXP-R00 Bistos Co., Ltd. 2020.03
Figure 10-1: SpO
2
parameter display
SpO2 wave is as shown in figure 10-2.
Figure 10-2: SpO
2
wave
10.5 Setting SpO
2
Select SpO
2
parameter area or SpO
2
wave area
→ “
SpO
2
Setup” menu, which is shown below. You can set SpO
2
through “SpO
2
Setup” menu.
Figure 10-3:
“
SpO2 Setup” menu
10.5.1 Setting wave speed
 Select “Wave Speed” and set wave speed to “12.5mm/s” or “25mm/s”; the faster speed, the smoother wave.
10.5.2 Setting wave mode

Select “Wave Mode”, and set the wave drawing mode

“Scan”: Scan mode.
 “Fill”: Fill mode.
10.5.3 Setting average time

Select “Average Time”, and set the average time to “2-4s”, ”4-8s” , ”8-16s”.
10.5.4 Pulse volume
 The user can set the pulse volume. The pulse volume can be set to 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9. By default, the pulse volume is
set to 3.
10.6 Measuring influencing factors
During operation, the following factors can affect the accuracy of SpO
2
measurement:
 High-frequency radio wave interference, such as interference generated by the host system or interference from
electrosurgery instrument connected to the system.

Intravenous dye.

Too frequent movement of the patient.
 External light radiation.
 Sensor is improperly installed or improperly in contact with the patient.
 Sensor temperature.
 The sensor is placed on limbs with blood pressure cuff, arterial duct or lumen tube.
 Concentration of non-functional hemoglobin such as carboxyhemoglobin (COHb) and methemoglobin (MetHb).
 Shock, anemia, hypothermia, and the application of vasoconstrictor drugs may reduce the arterial blood flow to a level that
cannot be measured.
 The measurement also depends on the absorption of specific wavelengths of light by oxyhemoglobin and reduced
hemoglobin. If there is any other substance that absorbs the same wavelength, the measurement may have false or low SpO
2
values, such as: carbon hemoglobin, methemoglobin, methylene blue, and indigo carmine.
 SpO
2
probe described in Annex is recommended.
 Operating environment limit: Operating temperature range: 5
～
40
℃
, Humidity range:30%~85% (non-condensing)
Atmospheric pressure: 700hPa
～
1060hPa.