User's Manual

Fetal Monitoring
15-9
Uterine Activity
The toco transducer detects uterine activity by sensing changes in tension on the
abdomen. Although absolute uterine pressure cannot be measured by this
method, the toco transducer does provide a reliable indication of the timing and
approximate duration of contractions.
Toco Transducer Preparation and Application
1. Plug the toco transducer (yellow) connector into the UA (yellow) connector on
the front of the monitor. The groove on the toco transducer connector must be
aligned properly.
2. Position the transducer on the maternal abdomen. The best location is usually
midline between the fundus and the umbilicus.
3. The transducer should be held securely in place with the transducer belts
without causing discomfort to the patient.
4. To initialize, touch the UA REF key. The UA display will reset to 20 units
momentarily.
!
• Do not use any kind of gel on the toco transducer.
!
• Toco sensitivity can be set at three different levels enabling you
to adjust the sensitivity to meet the specific needs of a particular
patient.
To initialize uterine activity:
1 Touch the UA REF key.
2 Touch YES to confirm.
To set the Toco sensitivity:
1 Touch the SETUP key on the
main fetal menu.
2 Touch the TOCO SENS key.
3 Select LOW, MEDIUM, or
HIGH sensitivity.