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11 things that can cause preterm labor and early delivery

Written by Jennifer Lincoln, MD, IBCLC, Board Certified OB/GYN

A short cervix

The cervix is designed to keep the uterus closed.

A short cervix can trigger early labor as the baby grows. Generally, “short” is defined as less than 2.5 centimeters long. Your doctor can usually see this during ultrasound.

Reviewed by Jennifer Lincoln, March 2020

References

  1. The American College of Obstetricians and Gynecologists. Practice Bulletin #130: Prediction and prevention of preterm birth. October 2012.
  2. SG Gabbe et al. Obstetrics: Normal and problem pregnancies. 5th ed.
  3. The American College of Obstetricians and Gynecologsits. Patient FAQ#87: Preterm (premature) labor and birth. September 2015.

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