What Is TOCO Fetal Monitoring?

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TOCO is short for tocodynamometer, a device that is used to measure the duration, frequency and relative strength of uterine contractions in pregnant women, according to the Center for Experiential Learning. TOCO devices are noninvasive. They are pressure-sensitive devices that are held against the abdomen of a pregnant woman by a belt or band and respond to and record changes in uterine muscles, according to Johns Hopkins Medicine.