Fetal Ultrasound

Obstetric Ultrasound, Pregnancy Ultrasound, Sonogram, Fetal, Ultrasound, Fetal, Ultrasound, Obstetric, Ultrasound, Pregnancy

What Affects the Test

Fetal ultrasound results may be affected by:

• Being very overweight or obese.
• Stool (feces) or air in the intestines or rectum.
• An abnormally low amount of amniotic fluid.
• Some fetal positions.
• Not being able to lie still during the procedure.
• A very active fetus.

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Author:	Maria G. Essig, MS, ELS	Last Updated: July 20, 2007
Medical Review:	Adam Husney, MD - Family Medicine Joy Melnikow, MD, MPH - Family Medicine Deborah A. Penava, BA, MD, FRCSC, MPH - Obstetrics and Gynecology Anne C. Poinier, MD - Internal Medicine
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