Preterm labor can be caused by a
problem involving the baby, the mother, or both. Often a combination of
several factors is responsible. But in about 1 out of 3 preterm births, the
cause isn't known.1
Causes of preterm labor include:
- Being pregnant with more than one baby. Women who are pregnant with more than one baby have an
increased risk of complications—both for the mother and the babies—and typically deliver
- Infection, which can trigger uterine contractions and
preterm premature rupture of membranes (pPROM). This may include:
- Placenta abruptio. This is the early separation of the
placenta from the uterus.
- The use of drugs such as cocaine or methamphetamine.
- Problems with the uterus or cervix, such as:
- A weak,
- Fibroid growth.
- An abnormally shaped uterus.
Sarah Marshall, MD - Family Medicine
William Gilbert, MD - Maternal and Fetal Medicine
January 8, 2013
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