Which complication would the nurse monitor for in the infant born at 36 1/7 weeks gestation

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

  • Preterm babies often require special care in the neonatal intensive care unit (NICU). In general, the earlier the preterm infant, the greater the likelihood that life support will be needed, meaning a longer stay in the NICU.
  • Preterm babies are at higher risk of being readmitted to the hospital and at higher risk of death after they go home.
  • Two of the most serious problems of preterm birth are respiratory distress and immature brains:
    • Serious breathing problems are common in preterm infants and may even require that the baby be put on life support (ventilators). These babies may have breathing problems through the first year of life and increased risk for asthma later.
    •  The brain is the last major organ to mature in babies. The immature brain continues to develop even after the time of birth. The more prematurely the baby is born, the more likely it is that bleeding or other signs of stress will affect the brain. Even at 35 weeks, the baby's brain weighs only two-thirds what it will weigh at term (about 40 weeks). If the baby is born early, even just a few weeks early, this important brain growth takes place in an abnormal environment (outside the womb).

Long-Term Effects of Preterm Birth

  • Preterm babies can suffer lifelong effects such as cerebral palsy, mental retardation, visual and hearing impairments, and poor health and growth.
  • Babies born only a few weeks early (late preterm, 34-36 weeks) often have long-term difficulties such as:
    • Behavioral and social-emotional problems
    • Learning difficulties
    • Increased risk of conditions such as Attention Deficit-Hyperactivity Disorder (ADHD)
    • Increased risk for Sudden Infant Death Syndrome (SIDS)
  • Children born preterm are more likely to require early intervention and special education services.
  • Children born preterm are more likely as adults to have chronic diseases such as heart disease, hypertension and diabetes.

FOR MORE INFORMATION

Kentucky 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: 
www.prematurityprevention.org 
www.marchofdimes.org 
www.nacersano.org  

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. 

This content was produced by UK HealthCare Brand Strategy.

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:

  • Maternal factors:

    • High blood pressure

    • Chronic kidney disease

    • Advanced diabetes

    • Heart or respiratory disease

    • Malnutrition, anemia

    • Infection

    • Substance use (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 (for example, twins or triplets)

    • Infection

    • Birth defects

    • Chromosomal abnormality

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:

  • 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)

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:

  • 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 uses 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 flow through blood vessels in both the fetal brain and the umbilical cord 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

  • Gestational assessment. Babies are weighed within the first few hours after birth. The weight is compared with the baby's gestational age and recorded in the medical record. The birthweight must be compared to the gestational age. Some doctors use a formula for calculating a baby's body mass to diagnose SGA.

Specific treatment for SGA will be determined by your baby's doctor based on:

  • Your baby's gestational age, overall health, and medical history

  • Extent of the condition

  • Your baby's tolerance for specific medications, procedures, or therapies

  • Expectations for the course of the condition

  • Your opinion or preference

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:

  • Temperature controlled beds or incubators

  • Tube feedings (if the baby does not have a strong suck)

  • Checking for hypoglycemia (low blood sugar) through blood tests

  • Monitoring of oxygen levels

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.