tocodynamometer
Pronunciation: toh-koh-dy-nah-MOM-eh-ter
External monitoring device that measures uterine contraction frequency and duration during labor.
Full Definition
A tocodynamometer (toco) is a pressure-sensitive device placed on the maternal abdomen to monitor uterine contractions non-invasively during labor and antepartum surveillance. The device detects changes in abdominal tension caused by uterine muscle contraction and displays this information graphically alongside fetal heart rate tracings. While tocodynamometry provides accurate measurement of contraction frequency and duration, it cannot reliably assess contraction intensity, which requires internal monitoring. Proper toco placement over the uterine fundus is essential for optimal signal quality. This technology is standard equipment in labor and delivery units worldwide.
Usage
Usage note: Commonly abbreviated as 'toco' in clinical practice.
In Context
- "The tocodynamometer revealed regular contractions every 3 minutes lasting 60 seconds." — Labor monitoring record
- "Tocodynamometer placement was adjusted to improve contraction signal quality." — Nursing assessment note