What is estimated fetal weight?

Fetal ultrasound measurements show how the baby is growing and also help detect abnormalities. The estimation of the fetal weight during pregnancy is among the most important examinations done. These measurements may help your doctor determine whether the baby is too small (intrauterine growth restriction: IUGR) or too big (large for gestational age: LGA). Babies that are too small or too large have higher risks of complications. Because the early detection of growth abnormalities may help to manage complications more appropriately even before the baby is born, monitoring fetal growth is an important part of antepartum care. Monitoring can be done through several steps including palpating the uterus and the fetus, measuring the size of the uterus, and performing a sonogram. A sonogram will measure various parts of the fetus, including the head, abdomen, and upper thighbone.

The growth of the fetus (and the percentile of the ultrasound sonogram) during pregnancy is dependent on many factors such as genetic, placental and maternal factors. Under normal circumstances, the fetus' inherent growth potential yields a newborn of appropriate size (not too big or too small) with a wide range of ‘normal’ sizes. The maternal-placental-fetal units act in harmony to provide the needs of the fetus while supporting the physiologic changes of the mother. When there is a limitation of growth potential in a fetus, that is comparable to failure to thrive in the infant. The causes of both can be intrinsic or environmental. The key is to detect any growth issues as early as possible.

Facts About Pregnancy

Pregnancy is a time in life when women feel closer to their spouse and body more than ever before. Here are a few facts about pregnancy for expecting moms. ... read more »

Fetal Weight Calculator

How big is your baby? This Fetal Weight Calculator can calculate the size and weight of your unborn baby and help you to keep track of your baby's growth in the womb. ... read more »

Estimated Fetal Weight Calculator

This fetal weight calculator will estimate the fetal weight of your baby! ... read more »

What is Macrosomia?

Macrosomia is the term used to define an infant that measures more than 8 pounds 13 ounces or 4000 grams (4 kg) at birth. Macrosomia is only definitively determined after birth. ... read more »

Ultrasound Measurements In Pregnancy

During pregnancy many different ultrasounds measurements can be done. They can include the crown rump length (CRL), biparietal diameter (BPD), femur length (FL), head circumference ... read more »

Small for Gestational Age (SGA) & Intrauterine Growth Restriction (IUGR)

SGA or Intrauterine Growth Restriction (IUGR) are usually identified by ultrasound before birth or an examination after birth. ... read more »

Calculator: How Much Does My Baby Weigh This Week?

Find out your baby's birthweight with this calculator which estimates weight by weeks of the pregnancy. ... read more »