Preterm birth is the leading cause of newborn death. Advances in neonatal care and treatments for preterm babies have greatly increased the chances for survival of even the smallest babies. But survival is not the only outcome measure. Babies born before 37 weeks are still vulnerable to increased risk for death and to many short- and long-term effects of premature birth. All babies born preterm are at risk for serious health problems. Even babies born only four to six weeks early can have effects from the preterm birth such as breathing difficulties, feeding problems, jaundice and effects on brain functions. Short-Term Effects of Preterm Birth
Long-Term Effects of Preterm Birth
FOR MORE INFORMATIONKentucky Children's Hospital is the only hospital in central Kentucky that offers a Level IV NICU to care for the tiniest babies. Call 1-800-333-8874 or visit our website or the following sites: Healthy Babies Are Worth the Wait® is a multifaceted partnership of the March of Dimes, the Johnson & Johnson Pediatric Institute and the Kentucky Department for Public Health. The primary goal of the initiative is a 15 percent reduction in the rate of "preventable" single preterm births - particularly babies born late preterm (four to six weeks early) - in three targeted intervention sites in Kentucky: King's Daughters Medical Center in Ashland, Trover Health System Regional Medical Center of Hopkins County and the University of Kentucky Albert B. Chandler Hospital in Lexington. Health care teams at each site provide mothers-to-be with an integrated approach of education, counseling and clinical care.
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Small for gestational age is a term used to describe a baby who is smaller than the usual amount for the number of weeks of pregnancy. SGA babies usually have birthweights below the 10th percentile for babies of the same gestational age. This means that they are smaller than many other babies of the same gestational age. SGA babies may appear physically and neurologically mature but are smaller than other babies of the same gestational age. SGA babies may be proportionately small (equally small all over) or they may be of normal length and size but have lower weight and body mass. SGA babies may be premature (born before 37 weeks of pregnancy), full term (37 to 41 weeks), or post term (after 42 weeks of pregnancy).
Although some babies are small because of genetics (their parents are small), most SGA babies are small because of fetal growth problems that occur during pregnancy. Many babies with SGA have a condition called intrauterine growth restriction (IUGR). IUGR occurs when the fetus does not receive the necessary nutrients and oxygen needed for proper growth and development of organs and tissues. 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. Some factors that may contribute to SGA and/or IUGR include the following:
When the fetus does not receive enough oxygen or nutrients during pregnancy, overall body and organ growth is limited, and tissue and organ cells may not grow as large or as numerous. Some of the conditions that cause SGA and IUGR restrict blood flow through the placenta. This can cause the fetus to receive less oxygen than normal, increasing the risks for the baby during pregnancy, delivery, and afterwards. Babies with SGA and/or IUGR may have problems at birth including the following:
The baby with SGA is often identified before birth. During pregnancy, a baby's 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. Although many SGA babies have low birthweight, they are not all premature and may not experience the problems of premature babies. Other SGA babies, especially those with IUGR, appear thin, pale, and with loose, dry skin. The umbilical cord is often thin, and dull-looking rather than shiny and fat. Other diagnostic procedures may include the following:
Specific treatment for SGA will be determined by your baby's doctor based on:
Babies with SGA may be physically more mature than their small size indicates. But they may be weak and less able to tolerate large feedings or to stay warm. Treatment of the SGA baby may include:
Babies who are SGA and are also premature may have additional needs including oxygen and mechanical help to breathe.
Prenatal care is important in all pregnancies, and especially to identify problems with fetal growth. Stopping smoking and use of substances such as drugs and alcohol are essential to a healthy pregnancy and can reduce the risk for sudden infant death syndrome (SIDS) and other sleep-related infant deaths. Eating a healthy diet in pregnancy may also help. |