13 Monitoring Invasive Pressure Calculating Cerebral Perfusion
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5
Select the calibration pressure from the list, for example 200 mmHg.
6 Select Confirm to recalculate the calibration factor using the applied pressure.
7 When the monitor displays <Press> calibration done at <date and time>,
remove the manometer tubing, syringe and extra stopcock. We recommend you replace the
transducer dome and tubing with sterile ones.
8 Label the transducer with the calibration factor shown in the Cal. Factor field in the
pressure’s setup menu.
9 Reconnect the patient and start measuring again.
Troubleshooting the Pressure Calibration
The status line lists the probable cause of an unsuccessful calibration.
Calculating Cerebral Perfusion
The monitor can calculate the difference between mean arterial pressure and the intracranial pressure.
The difference is labeled CPP.
1 In the Main Setup menu, select Measurements.
2 In the Setup CPP menu, select ABP, ART, Ao, BAP or FAP as the arterial pressure source.
The CPP value will not be available when the X2 is connected to a host monitor.
Message Corrective Action
can’t calibr.; equipmt
malf.
Contact your service department. The pressure hardware is faulty.
can’t calibrate;out of
range
Make sure that you have selected the value for Cal. Press that
you are applying to the transducer, and repeat the calibration.
can’t calibr.; no
transd.
Make sure that the transducer is connected and try again.
can’t cal.; unstable
signal
Make sure there are no disturbances to the transducer, and repeat
the calibration.
can’t calibr.;do zero
first
No valid zero. Zero the transducer.
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