A–Z Glossary

Contraction interval

Contraction spacing is the interval from the beginning of one uterine contraction to the beginning of the next.

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How contraction timing changes over labor

How contraction timing changes over labor

What contraction timing measures Contraction timing describes several related features of uterine activity. Frequency is usually measured start-to-start: the time from the beginning of one contraction to the beginning of the next. Duration is how long an individual contraction lasts. Interval or rest time is the space between the end of one contraction and the […]

What contraction spacing means and how close they get

What contraction spacing means and how close they get

What contraction spacing actually measures A contraction is a rhythmic tightening and relaxation of the uterine muscle. During a contraction, the uterus becomes firm and pressure or pain may build; between contractions, the uterus relaxes. The spacing describes contraction frequency, usually expressed as the number of minutes from the start of one contraction to the […]