Mindray VS 9 - Spo Display; Preparing for Spo Monitoring

8 - 5
8.4 SpO
2
Display
NOTE
• PI is only available for Mindray SpO
2
and Masimo SpO
2
.
• If the measurement fails, or measurement is not taken, “--” is displayed.
• Outlined numerics indicate that the measurement may not be reliable. So
these values are not recommended for reference.
8.5 Preparing for SpO
2
Monitoring
To prepare to monitor SpO
2
, follow this procedure:
3
5
1 2
4
1 Oxygen saturation of arterial blood (SpO
2
): percentage of oxygenated hemoglobin
in relation to the sum of oxyhemoglobin and deoxyhemoglobin.
2 Perfusion indicator: the pulsatile portion of the measured signal caused by arterial
pulsation.
3 Perfusion index (PI): gives the numerical value for the pulsatile portion of the
measured signal caused by arterial pulsation. PI is an indicator of the pulsatile
strength. You can also use it to assess the SpO
2
signal strength.
• Above 1 is optimal.
• Between 0.3 and 1 is acceptable. The PI is displayed with a yellow background.
• Below 0.3 indicates low perfusion. The PI is displayed with a red background and
the SpO
2
value is outlined. Reposition the SpO
2
sensor or find a better site. If low
perfusion persists, choose another method to measure oxygen saturation if
possible.
4 Pulse rate (derived from the pleth wave): detected pulsations per minute.
5 Pleth waveform (Pleth): visual indication of patient’s pulse. The waveform is not
normalized.