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Zeroing The Pressure Transducer - Philips M8102A Instructions For Use Manual

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Zeroing the Pressure Transducer

Zeroing the Pressure Transducer
To avoid inaccurate pressure readings, the monitor requires a valid zero. Zero the transducer in
accordance with your hospital policy (at least once per day). You must perform a zero:
• when you use a new transducer or tubing
• every time you reconnect the transducer cable to the monitor
• if you think the monitor's pressure readings are not correct.
Zeroing ICP (or IC1/IC2)
Your hospital guidelines may require you to zero the ICP transducer less frequently than other
transducers, due to the need for aseptic conditions. When you zero an ICP transducer, the zero values
are automatically stored and you will not be prompted to repeat the zero procedure.
If you want to simultaneously zero all pressures except ICP, disconnect the ICP transducer from the
monitor while zeroing. Reconnecting the transducer recalls the stored values.
If you select the label ICP (or IC1/IC2), the measurement device uses the most recently stored zero.
Therefore, make sure you zeroed the transducer correctly in accordance with the transducer
manufacturer's instructions and your hospital policy. When you use a transducer that you cannot
rezero after placement, ensure that you keep the measuring device with the patient so that you are
certain you have the correct zero data for this patient.
Determining a Pressure's Most Recent Zero
The monitor displays the most recent zero on the status line. If this has "timed-out" after you have
performed a zero, redisplay the information in the status line by entering the pressure's setup menu.
Zeroing a Pressure Measurement
Invasive pressure alarms (and pulse alarms, if derived from invasive pressure) are temporarily
suppressed until 30 seconds after the transducer finishes zeroing.
Turn off the stopcock to the patient.
Vent the transducer to atmospheric pressure, to compensate for the static and atmospheric pressure
exerted on the transducer.
In the setup menu for the pressure, select Zero <Press>.
When you see the message <Press> zero done at <date and time> on the status
line, (for example, ABP zero done at 13 Mar 02 23.35) close the stopcock to
atmospheric pressure, and open the stopcock to the patient.
When using high frequency ventilation, ensure that the tubing from the ventilator does not touch the
arterial line, or connect with it indirectly, while zeroing the pressure. This could cause small pressure
variations which can interfere with the zero procedure.
13 Monitoring Invasive Pressure


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Intellivue mp2M3016aM3012aM3014aM3015a

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