Glossary

Term · Getting Ready for Birth

precipitous labor

Also: precipitous birth, very fast labor, fast labor

A very fast labor, under about three hours from regular contractions to birth. It can be intense, and it is most common in mothers who have had a fast birth before.

In plain words

Precipitous labor is a labor that moves very fast, usually defined as less than three hours from the start of regular contractions to the birth of the baby. It is fairly uncommon. Only a few out of every hundred US births are this fast. A mother who has had a precipitous labor before is more likely to have another one. Fast labor can bring intense pain with little time to plan, and it can happen before a mother reaches the hospital or birth center. Some mothers feel they had no time to get help. Precipitous labor does carry some risk, including a higher chance of tears and of bleeding after birth, and the baby can arrive quickly. If a fast labor is expected, talk with your provider in pregnancy about your plan and how far you live from care.

The deeper version

Precipitous labor is defined as delivery within less than three hours of onset of regular contractions, a definition used in national natality analyses and in much clinical literature. US natality data record it in roughly 2 to 3 percent of births. Prior precipitous labor is its strongest recognized predictor, along with multiparity and rapid cervical change. Associated risks include lacerations, , and unplanned birth outside a facility, and reported neonatal outcomes depend on setting. The key clinical question is distinguishing precipitous labor from a sudden change in fetal or maternal status during labor. The main controversy concerns how much prenatal counseling and travel planning change outcomes, since evidence comes largely from observational data.

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Sources

  • Martin JA et al. — Births: Final Data, National Vital Statistics Reports (National Center for Health Statistics)
  • American College of Obstetricians and Gynecologists — Committee Opinion 766: Approaches to Limit Intervention During Labor and Birth (2019)

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