User's Manual

SvO
2
20-13
Correcting SvO
2
Display Error
If the oxygen saturation value is out of the display range, the display changes from
a percentage to ???.
Take the following action as indicated:
• Verify proper function of the optical module; no error messages display.
Replace with a known good module if necessary.
• Display light intensity history to verify proper catheter function (refer to
Correcting Insufficient Light Intensity on page 20-12).
• Perform in vivo calibration.
Ensuring Catheter Function
The catheter fiber optics are sensitive to damage. Avoid kinking, excessive
manipulation, or grasping with forceps or a hemostat. Damage to the fiber optics
reduces transmission of light to and from the blood which significantly
compromises oxygen saturation accuracy.
Damage is indicated by one or more of the following:
• Low intensity display.
• Intensity error message displays.
• Intensity alarms begin if alarms are ON.
• Oxygen saturating values are inaccurate.