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3. Acquire the average value of C.O. and C.I. A maximum of 6 measurements can be stored. If you perform
more than six measurements without rejecting any, the oldest will automatically be deleted when a
seventh curve is stored. Select from the 6 measurement curves and the system will automatically calculate
and display the averaged C.O. and C.I. values. Then select the Accept Average button to accept and store
the averaged values.
When injecting, the stopcock to the thermodilution catheter is open and the stopcock to the injectate solution is
closed. After completing the measurement, turn off the stopcock to the thermodilution catheter and turn on the
stopcock to the injectate solution, and then draw the injectate solution into the injectate syringe.
The button area also provides you with the following functions:
■ Select Stop to stop the current measurement. Select Setup to enter the C.O. menu.
■ Select Hemo Calcs to enter the Calculations menu.
• Starting a measurement without blood temperature being stable may cause measurement failure.
• The TB alarms are inactivated during a C.O. measurement, and will be reactivated automatically
after the completion of C.O. measurement.
• Please see the Instructions for Use of thermodilution catheter to determine the Comp Const and the
volume of injectate solution.
17.7 Changing C.O. Settings
17.7.1 Setting C.O. Alarm Properties
To set the C.O. alarm properties, follow this procedure:
1. Select the C.O. numeric area to enter the C.O. Measure menu.
2. Select Setup to enter the C.O. menu.
3. Select the Alarm tab.
4. Enter the password if required.
5. Set alarm properties as desired.
17.7.2 Selecting the Primary C.O. Parameter
You can select C.O. or C.I. as the main C.O. parameter. The measurement of the primary parameter displays in
larger numerics. To do so, follow this procedure:
1. Select the C.O. parameter area to enter the C.O. Measure menu.
2. Select the Setup tab.
3. Set Primary Parameter.
17.8 C.O. Troubleshooting
This section lists the problems that might occur. If you encounter the problems when using the equipment or
accessories, check the table below before requesting for services. If the problem persists, contact your service
personnel.
• For the physiological and technical alarm messages, see DAlarm Messages.
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