estimated date of confinement

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es·ti·mat·ed date of confinement

n. Abbr. EDC
The date at which an infant is expected to be born, calculated from the date of the last menstrual period. Also called due date.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Patient discussion about estimated date of confinement

Q. How many women actually give birth on their EDD (expected delivery date)? I am pregnant and my EDD is January 22nd. I was wondering what are the chances I will give birth on that day exactly?

A. If it's your first pregnancy, you probably will give birth after your EDD, as first pregnancies tend to be longer. Your EDD is after a full 40 weeks of pregnancy. It is most common to give birth between 38- 42 weeks of pregnancy.

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References in periodicals archive ?
Kopta MM, May RR, Crane JP: A comparison of the reliability of the estimated date of confinement predicted by crown-rump length and biparietal diameter.
Six consultations were requested among patients having third-trimester examinations, and in 11 cases infants were delivered more than 2 weeks from the predicted estimated date of confinement (11%).
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