Cardiac Output Modules, M-COP and M-COPSv
Document No. 8001012-1
23
4.1.3
InvBP
Trouble
Cause
Treatment
Abnormally low pressure
Transducer wrongly positioned.
Check mid-heart level and reposition
transducer.
No pressure
Defective transducer.
Check transducer.
No pressure module plugged in.
Check the module.
No waveform selected on screen.
To select the desired pressure waveforms
press Monitor Setup key and select modify
waveforms.
Check that the pressure transducer is
open to the patient.
Not zeroed-message
Measurement on, channel not zeroed. Zero the channel.
Zeroing failed-message
Unsuccessful zeroing of P4 (number
field).
Possibly due to pulsating pressure
waveform. Open the transducer to room air
and zero the channel.
Offset is > 150 mmHg. Open the
transducer to room air and zero the
channel.
Defective transducer. Replace and zero
the channel.
Calibration failed-message Unsuccessful calibrating of P4
(number field).
Pulsating waveform. Turn the transducer to
sphygmomanometer and try again (zeroing
takes place first).
Gain is beyond the limits (
±
20 % of the
default gain) of the module. Replace the
transducer.
Out of range
≤
40 mmHg
Measurement pressure is beyond
measurement range.
Check transducer level. Zero the channel.
Out of range > 320 mmHg
Measurement pressure is beyond
measurement range.
Check transducer level. Zero the channel.
The patient may also have high blood
pressure.
Zero adj. > 100 mmHg
Offset when zeroing is > 100 mmHg
(but < 150 mmHg) from the absolute
zero of the module (with default gain).
Check transducer. The waveform may hit
the top and the numeric display not
shown.
Out of range
Measured pressure is beyond the
internal measurement range of the
module.
The waveform hits the top and the numeric
display not shown. Check transducer and
its level. Zero the channel.
See also the troubleshooting flowchart on the next page.
