Zeroing the Pressure Transducer

12 Monitoring Invasive Pressure

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 measurement server or module while zeroing. Reconnecting the transducer recalls the stored values.

WARNING 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

WARNING Invasive pressure alarms (and pulse alarms, if derived from invasive pressure) are temporarily suppressed until 30 seconds after the transducer finishes zeroing.

1Turn off the stopcock to the patient.

2Vent the transducer to atmospheric pressure, to compensate for the static and atmospheric pressure exerted on the transducer.

3In the setup menu for the pressure, select Zero <Press>.

4When 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.

Using the Zero Hardkey

Pressing the Zero hardkey for two seconds on the M1006B Pressure module starts a zero for the pressure currently measured with the module.

Pressing the Zero hardkey for two seconds on the M3001A Multi-Measurement Server zeros the pressure being measured by the measurement server and the pressures from any connected measurement extensions.

Zeroing All Pressures Simultaneously

WARNING Before zeroing all pressures, make sure that all pressure transducers are vented to atmospheric pressure.

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Philips MP40/50, MP20/30 Zeroing ICP or IC1/IC2, Determining a Pressure’s Most Recent Zero, Zeroing a Pressure Measurement

MP60/70/80/90, MP40/50, MP20/30 specifications

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