Mindray Spectrum - EPM Cardiac Output Troubleshooting

Spectrum
®
/Spectrum OR
™
Service Manual 0070-10-0556-02 1 - 33
Repair Information Troubleshooting Menus
1.25.9 EPM Cardiac Output Troubleshooting
MESSAGE/
PROBLEM REASON SOLUTION
CO value higher /
lower than expected
Computation constant incorrect for PA
catheter type, injectate temperature,
and injectate volume.
Check computation constant
and enter correct data.
Catheter may be kinked or not in proper
position.
Notify physician.
No measurement/
Unable to measure
Unstable temperature. Check injectate temperature.
No temperature or temperature out of
range.
Flush PA catheter.
Time elapsed for measurement. Discard bolus fluid.
Check patient.
Wait for Ready or Inject
when Ready message to
appear. Rebolus when ready.
CO Signal Under
Range
Appears if the CO curve is not sufficient
for a CO calculation or if a curve is not
detected within thirty (30) seconds
Rebolus if necessary
CO Out of Range Appears if the CO is out of the
measurable range
(0.2 l/min to 20.0 l/min). Computation
constant incorrect for PA catheter type,
injectate temperature, and injectate
volume.
Check computation constant
and enter correct data. Rebolus
when ready.
Irregular curve Improper injection procedure. Check hospital policy, inject in
a smooth and fluid bolus.
Catheter may be kinked or not in proper
position.
Notify physician.
Patient movement during injection. Have patient lay still during
bolus procedure.
Measurement displayed if CO curve
has multiple peaks, failure to return to
baseline or irregularities in curve.
Rebolus when ready
Delayed Injection Appears if the time between the start of
the CO measurement and the onset of
the temperature change is more than
fifteen (15) seconds
Rebolus when ready.
Ensure that the CO bolus is
initiated within 15 seconds
Check the temperature of the
injectate
Injectate Temp Error Appears when the temperature of the
injectate is too warm (>27ºC) or the
difference between the injectate and the
blood temperature is <8ºC.
Check injectate fluid, insure
fluid is not under warm lights,
near a warming blanket or
another warm source.
Noisy Baseline Cardiac Output waveform baseline is
unstable
Rebolus when ready.
Measuring Appears once an injection is detected
during the process of a CO run.
Injectate Temp. Out
of Range
Appears when the temperature of the
injectate is too warm (>27ºC) or the
difference between the injectate and the
blood temperature is <8ºC.
Check injectate fluid, insure
fluid is not under warm lights,
near a warming blanket or
over-chilled in the ice bath.