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Intrauterine growth restriction (IUGR) is a term used to describe a condition in which the fetus is smaller than expected for the number of weeks of pregnancy. Another term for IUGR is fetal growth restriction. Newborn babies with IUGR are often described as small for gestational age (SGA).

A fetus with IUGR often has an estimated fetal weight less than the 10th percentile. This means that the fetus weighs less than 90 percent of all other fetuses of the same gestational age. A fetus with IUGR also may be born at term (after 37 weeks of pregnancy) or prematurely (before 37 weeks).

Newborn babies with IUGR often appear thin, pale, and have loose, dry skin. The umbilical cord is often thin and dull-looking rather than shiny and fat. Babies with IUGR sometimes have a wide-eyed look. Some babies do not have this malnourished appearance but are small all-over.

What causes intrauterine growth restriction (IUGR)?
Intrauterine growth restriction results when a problem or abnormality prevents cells and tissues from growing or causes cells to decrease in size. This may occur when the fetus does not receive the necessary nutrients and oxygen needed for growth and development of organs and tissues, or because of infection. Although some babies are small because of genetics (their parents are small), most IUGR is due to other causes. Some factors that may contribute to IUGR include the following:

Maternal factors:

high blood pressure
chronic kidney disease
advanced diabetes
heart or respiratory disease
malnutrition, anemia
infection
substance abuse (alcohol, drugs)
cigarette smoking

Factors involving the uterus and placenta:

decreased blood flow in the uterus and placenta
placental abruption (placenta detaches from the uterus)
placenta previa (placenta attaches low in the uterus)
infection in the tissues around the fetus

Factors related to the developing baby (fetus):

multiple gestation (twins, triplets, etc.)
infection
birth defects
chromosomal abnormality
Why is intrauterine growth restriction (IUGR) a concern?
IUGR can begin at any time in pregnancy. Early-onset IUGR is often due to chromosomal abnormalities, maternal disease, or severe problems with the placenta. Late-onset growth restriction (after 32 weeks) is usually related to other problems.

With IUGR, the growth of the baby's overall body and organs are limited, and tissue and organ cells may not grow as large or as numerous. When there is not enough blood flow through the placenta, the fetus may only receive low amounts of oxygen. This can cause the fetal heart rate to decrease placing the baby at great risk.

Babies with IUGR may have problems at birth including:

decreased oxygen levels

low Apgar scores (an assessment that helps identify babies with difficulty adapting after delivery)

meconium aspiration (inhalation of the first stools passed in utero), which can lead to difficulty breathing

hypoglycemia (low blood sugar)

difficulty maintaining normal body temperature

polycythemia (too many red blood cells)
Severe IUGR may result in stillbirth. It may also lead to long-term growth problems in babies and children.

How is intrauterine growth restriction (IUGR) diagnosed?
During pregnancy, fetal size can be estimated in different ways. The height of the fundus (the top of a mother's uterus) can be measured from the pubic bone. This measurement in centimeters usually corresponds with the number of weeks of pregnancy after the 20th week. If the measurement is low for the number of weeks, the baby may be smaller than expected.

Other diagnostic procedures may include the following:

ultrasound
Ultrasound (a test using sound waves to create a picture of internal structures) is a more accurate method of estimating fetal size. Measurements can be taken of the fetus' head and abdomen and compared with a growth chart to estimate fetal weight. The fetal abdominal circumference is a helpful indicator of fetal nutrition.

Doppler flow
Another way to interpret and diagnose IUGR during pregnancy is Doppler flow, which use sound waves to measure blood flow. The sound of moving blood produces wave-forms that reflect the speed and amount of the blood as it moves through a blood vessel. Blood vessels in the fetal brain and the umbilical cord blood flow can be checked with Doppler flow studies.

mother's weight gain
A mother's weight gain can also indicate a baby's size. Small maternal weight gains in pregnancy may correspond with a small baby.
How is intrauterine growth restriction (IUGR) managed?
Management of IUGR depends on the severity of growth restriction, and how early the problem began in the pregnancy. Generally, the earlier and more severe the growth restriction, the greater the risks to the fetus. Careful monitoring of a fetus with IUGR and ongoing testing may be needed.

Some of the ways to watch for potential problems include the following:

fetal movement counting - keeping track of fetal kicks and movements. A change in the number or frequency may mean the fetus is under stress.

nonstress testing - a test that watches the fetal heart rate for increases with fetal movements, a sign of fetal well-being.

biophysical profile - a test that combines the nonstress test with an ultrasound to evaluate fetal well-being.

ultrasound - a diagnostic imaging technique which uses high-frequency sound waves and a computer to create images of blood vessels, tissues, and organs. Ultrasounds are used to view internal organs as they function, and to assess blood flow through various vessels. Ultrasounds are used to follow fetal growth.

Doppler flow studies - a type of ultrasound which use sound waves to measure blood flow.
Treatment for IUGR:
Although it is not possible to reverse IUGR, some treatments may help slow or minimize the effects. Specific treatments for IUGR will be determined by your physician based on:

your pregnancy, overall health, and medical history
the extent of the disease
your tolerance for specific medications, procedures, or therapies
expectations for the course of the disease
your opinion or preference
Treatments may include:

nutrition
Some studies have shown that increasing maternal nutrition may increase gestational weight gain and fetal growth.

bedrest
Bedrest in the hospital or at home may help improve circulation to the fetus.

delivery
If IUGR endangers the health of the fetus, then an early delivery may be necessary.
Prevention of intrauterine growth restriction:
Intrauterine growth restriction may occur, even when the mother is in good health. However, some factors may increase the risks of IUGR, such as cigarette smoking and poor maternal nutrition. Avoiding harmful lifestyles, eating a healthy diet, and getting prenatal care may help decrease the risks for IUGR. Early detection may also help with IUGR treatment and outcome.

2007-02-24 13:31:31 · answer #1 · answered by ricleigh 3 · 2 0

I was diagnosed with possible IUGR because my son was developing slower then expected. At 20 weeks he measures 18, at 22 he measured 20 and so on. The most important thing with IUGR is that they see consistant growth with the baby. If they fail to see growth or if the growth fails to progress the DR's feel that something is restricting the growth. They diagnose IUGR.

It does not mean anything will be wrong with the baby but it needs to be monitored by an OB with ultrasounds. Failure to monitor this can result in serious problems which then could lead to other complications (such as retardation).

2007-02-24 14:46:08 · answer #2 · answered by blondefury37 2 · 0 0

I am very sorry that I couldn't help you out, but I was also curious as to what it was. I don't think it means that your baby will have any mental handicaps by what I read from the other answers. Thank you for the 2 points and Good Luck.

2007-02-24 14:04:29 · answer #3 · answered by missy 2 · 0 0

I am having the same problem, I am measuring about 2 weeks earlier than I am, and, same as you, I know exactly when I got pregnant because my husband was out of town for a lot of that month! So yeah it's normal says everyone I have talked to, and more common than you think! CONGRATS on your pregnancy, sounds like you're getting close to the end!!!! **HUGS** Toni Lynne

2016-03-16 00:32:38 · answer #4 · answered by Anonymous · 0 0

NO...it means that the baby is growing at a slower rate than normal babies at that stage...it has nothing to do with mental retardation at all....just means that the baby will be born smaller than the norm....IGUR stands for intrauterine growth retardation....hope this helped..Good Luck!

2007-02-24 13:35:24 · answer #5 · answered by Lisa ♥'s Tim 6 · 0 0

What Is Iugr

2016-10-04 23:07:40 · answer #6 · answered by seligson 4 · 0 0

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