15 Monitoring Uterine Activity Externally
External Toco Monitoring
Prepare for Toco monitoring using the list below. The standard procedures in use in your facility
determine the sequence of actions.
Fasten the abdominal transducer belt around the patient.
Connect the Toco transducer to a free socket on the monitor. The Toco baseline is automatically
reset. The Toco display shows 20. "
the trace at intervals.
Place the transducer on the patient's fundus to ensure the optimum recording of uterine activity.
Reset the Toco baseline as necessary (see "Resetting the Toco Baseline" on page 176), but not
during a contraction.
The following example trace shows two contractions.
Resetting the Toco Baseline
If the Toco value is negative for more that five seconds, the Toco baseline is automatically reset to
If the Toco sensitivity is too high, and the Toco trace exceeds the paper scale, you can reduce the Toco
sensitivity to 50%. The default setting is 100%.
To change the Toco sensitivity:
Abdominal Belt (disposable shown)
SmartKey. This resets the Toco baseline to 20 on the display and trace.
to toggle between
", indicating external uterine measurement, is printed on