Preterm Labor

Preterm Labor

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Exams and Tests

If you have symptoms of preterm labor, both you and your baby will be examined and monitored.

Information from these exams and tests can help you and your doctor or nurse-midwife decide whether to treat early labor and delay the birth or let it continue.

For the mother

You will be examined for tenderness in your uterus. Your temperature, pulse, and rate of breathing will be checked. Depending on your symptoms, you may have one or more exams or tests, including:

  • Vaginal smear. This test looks for:
    • Infection. Having an infection in the vagina can cause infection in your uterus. And that can trigger preterm labor as well as serious infection in the newborn.
    • Amniotic fluid. Finding this fluid in the vagina means that your water has broken.
    • Fetal fibronectin. When the test is negative, it is unlikely that you are having preterm labor. This test isn't used in all labor and delivery units.
  • Vaginal exam. You'll be checked to see if the contractions have begun to open (dilate) or thin (efface) your cervix.
  • Ultrasound to check the length of your cervix.
  • Other tests for infection, such as a blood test, urine test, and urine culture.

For the baby

Tests include:

Author:
Healthwise Staff
Medical Review:
Sarah Marshall, MD - Family Medicine
William Gilbert, MD - Maternal and Fetal Medicine
Last Updated:
January 8, 2013
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Topic Contents
Topic Overview
Cause
Symptoms
What Happens
What Increases Your Risk
When To Call a Doctor
Exams and Tests
Treatment Overview
Prevention
Home Treatment
Medications
Surgery
Other Places To Get Help
Related Information
References
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