14-6 Infinity Vista VF6
14 INVASIVE BLOOD PRESSURE
Zeroing and Calibration Check
The Zero field in the IBP setup menu:
z Displays the date and time of the last zeroing procedure.
z Allows you to zero the pressure transducer before entering a calibration
factor.
Pressure transducers are sensitive and their calibration may change significantly
following a mechanical shock or an overpressure in the system (e.g., after drawing
blood or injecting drugs).
If you are using reusable transducers, it is necessary to calibrate them with a mercury
manometer to determine the calibration factor. This calibration procedure is typically
the responsibility of your Biomed.
The calibration check procedure described in this section consists of adjusting the
monitor by entering the calibration factor given by your Biomed, if you are using
reusable transducers.
If you are using disposable transducers, use 100 as the calibration factor. Disposable
transducers are all pre-calibrated.
See the table on Zero and Calibration Check Troubleshooting (below) to help you
during the procedure.
STEPS: Zeroing and Entering a Cal. Factor
1. Click on the IBP1 parameter box.
2. Re-align the transducer to the patient’s heart level.
NOTE: Before zeroing, make sure the transducer is at heart level. It is necessary to
zero the transducer immediately after the introduction of the catheter in the patient’s
vascular system and before monitoring. You should also zero the transducer once a day
or after changing the tubing or the dome of the transducer.
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