15 Monitoring Uterine Activity Internally
134
C Toco
+
Transducer (M2735A)
Internal (IUP) Monitoring
Read the instructions that accompany the intrauterine catheter and the adapter cable before you start
monitoring. Zero the monitor when instructed.
WARNING
Do not catheterize if placenta previa is diagnosed or if uterine bleeding from an undetermined source
is present.
Prepare for IUP monitoring using the list below. The standard procedures in use in your facility
determine the sequence of actions.
• Perform a complete clinical evaluation.
• Catheterize after membrane rupture. Insert the catheter according to its accompanying
instructions.
• Connect the catheter to the socket on the patient module.
• Connect the patient module to a free socket on the monitor. The monitor is automatically zeroed.
The IUP display shows 0. "IUP", indicating internal measurement, is printed at intervals on the
trace.
• Zero the monitor (see “Zeroing the Monitor” on page 134).
• If you suspect the catheter is not responding appropriately, flush as directed in the catheter's
instructions for use. A pressure spike appears on the trace if you flush after connecting the
transducer to the monitor.
Zeroing the Monitor
Zero the monitor by selecting the Zero IUP SmartKey or selecting Zero IUP in the Setup
IUP
menu. This resets the display and trace to 0. If you do not zero the monitor properly, the pressure
trace may exceed the paper scaling. While zeroing the IUP measurement, ensure that the transducer is
at the same level as the maternal xiphoid (lower end of the sternum).
Selecting the IUP Unit
You can select between mmHg (default) and kPa for the IUP unit.
1 Enter the Setup IUP menu.
2 Press Unit to toggle between mmHg and kPa.
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