Zeroing The Transducer - ZOLL M Series Manual

Zeroing the Transducer

To ensure that the M Series unit measures pressure accurately, you must zero the transducer before each
use. The M Series automatically displays ZERO P1 or ZERO P2 when zeroing is necessary. If you
change or disconnect a transducer, you must zero the new transducer before use. If you move a transducer
to a different monitor, you must zero the transducer again even if you have already done so on another
unit. In addition to the procedure below, follow the transducer manufacturer's directions for use and your
established clinical protocol.
To zero the transducer:
1. Place the transducer at the same height as the patient's left atrium.
2. Close the transducer stopcock to the patient.
3. Open the venting stopcock to atmospheric air.
4. Allow a few seconds for the transducer to settle.
5. Press the Zero softkey. If the Zero softkey is not displayed, see "Displaying the IBP Menu" on
page 3.
The Zero menu displays (see Fig. 4):
6. Press the Select softkey to select the Pressure channel you want to zero.
7. Press the Enter softkey.
The M Series unit zeros the selected Pressure channel(s).
8. Verify that the numeric blood pressure data displays zero and that the REZERO message does not
display.
If the REZERO message displays after you have attempted to zero the Pressure channel, repeat
steps 1 - 8. If after repeated attempts, the transducer still does not zero correctly, use a different
transducer.
9. Close the venting stopcock to atmospheric air.
10. Open the transducer stopcock to the patient.
Within seconds the physiologic pressure readings display.
4
Figure 4: Zero Menu
ZOLL M Series Invasive Blood Pressure