14-4 DELTA/DELTA XL/KAPPA VF8
14 I
NVASIVE BLOOD PRESSURE
You should zero a transducer under the following conditions:
Immediately after you introduce the catheter into the patient’s vascular
system
After you initially connect the transducer to a pressure pod
Before each monitoring session
Before you enter a calibration factor
Whenever you change the tubing or transducer dome
When the message <IBP> Zero Required is displayed
The following table outlines zeroing procedures:
Calibration Procedures
Calibration procedures differ depending on whether you are using a disposable
(single-use) or reusable transducer. You do not need to calibrate disposable
transducers, which are already calibrated at the factory to the monitor’s default value
of 100. Prolonged use of reusable transducers, however, may adversely affect
accuracy.
Single Transducer Zero Simultaneous “Smart Zero”
1. Make sure the transducer is at heart level. Dräger recommends securing the transducer holders
on the front of the hemodynamic pod for proper height.
2. Close the transducer stopcock to the patient and open it to air.
3(a). Click on the parameter box associated with
the transducer you want to zero. The
parameter setup menu appears.
NOTE: You can also access the parameter
menu as follows:
1) Press the Menu fixed key to display the main
menu.
2) Click on Patient Setup.
3) Click on Parameters.
4) Scroll to the desired parameter and click.
WARNING: Do not use the ‘Smart Zero’
function if any pressure waveform is flat
(nearly static). Only use the ‘Smart Zero’
function when all the stopcocks are opened
to air.
3(b). Press the key on the hemodynamic
pod/MPod you wish to zero. The monitor
determines which of the pod’s transducers are
open to air and zeroes them.
NOTE: If you use step 3(b) and are unable to
zero a particular IBP with the key, use the
associated parameter box as described in 3(a).
This method can be more effective.
4. Click on Zero.
NOTE: If the procedure is successful, the monitor displays the message: <IBP> zero accepted. If
the procedure fails, the monitor displays the message: <IBP> did not zero. Check the waveform. If
spikes exceed three millimeters, repeat the procedure. If procedure fails after two attempts,
replace the transducer or consult your hospital’s technical personnel.
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