15 Monitoring Carbon Dioxide
values for non-intubated patients using Microstream accessories will always tend to be lower than
for intubated patients. If values appear extremely low, check whether the patient is breathing through
the mouth or whether one nostril is blocked
Removing Exhaust Gases from the System
Anesthetics: When using the Microstream CO
recently received anesthetics, connect the outlet to a scavenging system, or to the anesthesia machine/
ventilator, to avoid exposing medical staff to anesthetics.
Use an exhaust tube to remove the sample gas to a scavenging system. Attach it to the MMS Extension
at the outlet connector.
Suppressing Zero Calibration
To prevent an automatic zero calibration from being started in the next five minutes,
in the Setup CO
SmartKey, if configured.
Selecting No Zero For 5Min or selecting the Suppress CO
the timer has timed out resets the timer to five minutes, unless an AutoZero became due during the
Setting up all CO
These tasks are common to all CO
Adjusting the CO
In the CO
Choose a suitable scale range from the pop-up list.
Setting up CO
Temperature, water vapor in the patient's breath, barometric pressure, and the proportions of O
and Helium in the mixture all influence CO
check that the monitor is using the appropriate corrections.
If one of the corrections does not appear in your Setup CO
require that correction.
menu, select No Zero For 5Min, or select the Suppress CO
measurements except where otherwise noted.
Wave menu or the Setup CO
Altitude is set during installation. The monitor automatically applies an appropriate
In the Setup CO
menu, select Oxy. Corr and select a value between 0% and
100%, the default value is 20%.
Setting up all CO
measurement on patients who are receiving or have
menu, select Scale.
absorption. If values seem inaccurately high or low,
menu, your CO
Zero SmartKey again before
measurement does not