13 Monitoring Invasive Pressure
Connect the pressure line to the patient catheter.
If you are using an infusion pressure cuff with the pressure line, attach the pressure cuff to the fluid
to be infused. Inflate it according to your standard hospital procedure, then start the infusion.
Position the transducer so that it is level with the heart, approximately at the level of the
If measuring intracranial pressure (ICP, IC1 or IC2) with a sitting patient, level the transducer with the
top of the patient's ear. Incorrect leveling may give incorrect values.
Selecting a Pressure for Monitoring
Tell the monitor which pressure you want to monitor by selecting its pressure label. The label is a
unique identifier for each type of pressure. When you choose a label, the monitor uses that label's
stored settings, for example color, wave scale and alarm settings. The label also determines which
algorithm is used to process the pressure signal, so an incorrect label can lead to incorrect pressure
Select the appropriate label from the list.
Extended Pressure Label Set
The following additional labels are available if Label Set is set to Full. This setting can only be
changed in Configuration Mode.
Note that if your monitor is connected to an Information Center, the additional labels in the extended
label set may not be correctly displayed. See the Configuration Guide for your monitor for more
P1, P2, P3, P4 Alternative non-specific pressure labels
Arterial blood pressure
Arterial blood pressure (alternative)
Central venous pressure
Left atrial pressure
Brachial arterial pressure
Femoral arterial pressure
Alternative intracranial pressures
Setting up the Pressure Measurement
Non-specific pressure label
Pulmonary artery pressure
Right atrial pressure
Umbilical arterial pressure
Umbilical venous pressure