Chapter 6. External measurement of uterine
contraction
UAs are measured using external attachment-type pressure sensors. A TOCO probe is attached to the
abdomen of the patient to measure the relative pressures that vary with the uterine contraction of the
patient, thereby recording the uterine activity.
1) UC measurement
▣ TOCO probe connection
Please connect a TOCO probe to the “TOCO” connection terminal on the left side of the equipment.
▣ TOCO Probe
<New Probe>
▣ Basic operations following a TOCO probe connection
When no TOCO probe has been connected to the main body, “---” will be displayed in the FHR
display area. When a TOCO probe has been connected to the equipment, a numerical value will be
displayed, indicating that the system is ready to measure uterine activities. When FMs (Fetal
Movements) are viewed, “UC+FM” will be displayed.
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