11 Monitoring Invasive Pressure
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• approximately 25cm of tubing.
Making the Pressure Calibration
WARNING
Never perform the invasive pressure calibration while a patient is being monitored.
1 Zero the transducer.
2 Connect the syringe and manometer.
a. Attach the tubing to the manometer.
b. Connect the 3-way stopcock to the stopcock that is not connected to the patient catheter
when you measure a patient.
c. Attach the syringe to one port and the manometer tubing to the other port.
d. Open the port to the manometer.
1 Tubing to manometer
2 Syringe with heparinised solution
3 To pressure connector on monitor
4 Patient connection stoppered
5 Off
3 Move the syringe barrel in and raise the mercury to 200 mmHg (30 kPa). 200 mmHg is the
recommended calibration pressure.
4 In the Setup <Press Label> menu, select Cal. Press.
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 Label> mercury calibr. 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.
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