13 Monitoring Cardiac Output
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C.O./CCO Safety Information
WARNING
Catheter constant - Make sure that the arterial catheter constant for the measurement is appropriate
to the catheter used.
Computation Constant - Make sure that the computation constant for the measurement is
appropriate to the injectate volume, injectate temperature and catheter type used.
IABP - Do not perform transpulmonary thermodilution measurements on patients undergoing IABP
treatment.
CCO accuracy - Accuracy of the CCO measurement and all the derived values may be influenced by
patients with valve diseases or artificial valves.
C.O. and MRI - Do not use the Cardiac Output Interface Cable in Magnetic Resonance Imaging
(MRI) Applications.
Aortic graft patients - Do not use an arterial catheter in the arteria femoralis when it is contra
indicated, for example, with patients who have an aortic graft.
CAUTION
During the cardiac output measurement procedure the blood temperature alarms are inactive. This is
indicated by a crossed-out alarm symbol next to the temperature numeric. Making alarms inactive
during this procedure prevents false alarms. The alarms are automatically reactivated when you have
completed the measurement procedure.
Verify C.O. setup data A new transpulmonary thermodilution catheter has been
connected to the C.O. Interface Cable.
Check arterial pressure, CCO cal
currently not possible
Poor or invalid pressure signal, for example if pressure was not
zeroed.
Verify the Computation Constant A new catheter has been plugged in, or the computation
constant has been changed and
Start C.O. has not been
selected.
Previous Comp. Constant
replaced
A new C.O. module or measurement extension module with a
different computation constant from the current one has been
connected. The new computation constant is read from the new
C.O. device, and replaces the current one. The message
disappears when
Start C.O. is selected.
C.O./CCO Warning Messages Possible Causes
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