13 Monitoring Invasive Pressure
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Calibrating Reusable Transducers
Depending on your monitor's configuration, you may be able to perform a calibration in monitoring
mode. Perform a mercury calibration when you use a new transducer, and at regular intervals
according to your hospital policy. You require:
• standard sphygmomanometer.
• sterile 10cc syringe with heparinised solution.
•3-way stopcock.
• approximately 25 cm of tubing.
NOTE
Only reusable transducers must be calibrated.
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.
<Press Label> can't zero
- no transducer
Make sure that the transducer is connected and try again. If this fails,
exchange the adapter cable and try again. If this fails, exchange the
transducer.
<Press Label> can't zero;
pulsat. pressure
Make sure that the transducer is vented to air, not to the patient, and try
again.
<Press Label> unable to
zero - timed out
Try pressing the Zero key again. If this fails, replace the transducer and
adapter cable and contact your service personnel.
Switch <Press Label> on
first
Pressure measurement is switched off. To switch it on, in the Setup
Pressure menu, select the pressure's label.
Message Corrective Action
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