User's Manual

Table Of Contents
15 - 5
The button area also provides you with the following functions:
Select Stop to stop the current measurement. Select Setup to enter the C.O. dialog.
Select Hemo Calcs to enter the Calculations dialog.
NOTE
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.
15.7 Changing C.O. Settings
15.7.1 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 dialog.
2. Select
Setup to enter the C.O. dialog.
3. Select the
Alarm tab.
4. Enter the password if required. For more information, refer to
25.13.3Selecting Password for User
Authentication.
5. Set the alarm properties as desired.
15.8 C.O. Troubleshooting
This section lists the problems that might occur. If you encounter the problems when using the equipment or
accessories, the table below may help with troubleshooting before requesting a service personnel visit. If the
problem persists, contact your service personnel.
NOTE
For the physiological and technical alarm messages, see Appendix DAlarm Messages.
Problem Solution
Do not see C.O. numeric area on the main
screen
1. Check that the C.O. is set to display in the Screen Setup dialog. For
more information, see
3.9.2Displaying Parameter Numerics and
Waveforms
.
2. Check that if the C.O. parameter switch is enabled. If not, enable the
C.O. measurement. For more information, see
3.9.1Switching On or Off a
Parameter
.
3.Check that the patient type is adult.
4. Check the connection of C.O. cable, thermodilution catheter and TI
sensor.
C.O. value is inaccurate 1. Check that the thermodilution catheter is positioned properly.
2. Check that the computational constant is proper for current injectate
temperature, injectate volume and injectate probe type.
3. Inject solution rapidly and smoothly.
4. Finish injection within four to five seconds.
5. Inject more volume, or inject colder solution.
6. Check that the height and weight of patient is properly configured.
7. If
Auto TI is switched off, check that the entered temperature is
correct.