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Health Library : High-Risk Newborn

 

Assessments for Newborn Babies

Assessments for newborn babies

Each newborn baby is carefully checked at birth for signs of problems or complications. A complete physical assessment will be performed that includes every body system. Throughout the hospital stay, doctors, nurses, and other health care providers continually assess the health of the baby, observing for signs of problems or illness. Assessment may include:

Apgar scoring

The Apgar score is one of the first checks of your new baby's health. The Apgar score is assigned in the first few minutes after birth to help identify babies that have difficulty breathing or have a problem that needs further care. The baby is checked at one minute and five minutes after birth for heart and respiratory rates, muscle tone, reflexes, and color.

Each area can have a score of zero, one, or two, with 10 points as the maximum. A total score of 10 means a baby is in the best possible condition. Nearly all babies score between eight and 10, with one or two points taken off for blue hands and feet because of immature circulation. If a baby has a difficult time during delivery, this can lower the oxygen levels in the blood, which can lower the Apgar score. Apgar scores of three or less often mean a baby needs immediate attention and care.

SignScore = 0Score = 1Score = 2
Heart RateAbsentBelow 100 per minuteAbove 100 per minute
Respiratory EffortAbsentWeak, irregular, or gaspingGood, crying
Muscle ToneFlaccidSome flexion of arms and legsWell-flexed, or active movements of extremities
Reflex/IrritabilityNo responseGrimace or weak cryGood cry
ColorBlue all over, or paleBody pink, hands and feet bluePink all over

Birthweight

A baby's birthweight is an important indicator of health. The average weight for term babies (born between 37 and 41 weeks gestation) is about 7 lbs. (3.2 kg). In general, small babies and very large babies are at greater risk for problems. Babies are weighed daily in the nursery to assess growth, fluid, and nutrition needs. Newborn babies may often lose 5 to 7 percent of their birthweight. This means that a baby weighing 7 pounds 3 ounces at birth might lose as much as 8 ounces in the first few days. Babies will usually gain this weight back by 2 weeks of age. Premature and sick babies may not begin to gain weight right away.

Most hospitals use the metric system for weighing babies. This chart will help you convert grams to pounds.

Converting grams to pounds and ounces:

1 lb. = 453.59237 grams; 1 oz. = 28.349523 grams; 1000 grams = 1 Kg.

Pounds
Ounces23456789
09071361181422682722317536294082
19361389184322962750320336574111
29641417187123252778323236854139
39921446189923532807326037144167
410211474192823812835328937424196
510491503195624102863331737704224
610771531198424382892334537994252
711061559201324662920337438274281
811341588204124952948340238564309
911621616207025232977343038844337
1011911644209825513005345939124366
1112191673212625803033348739414394
1212471701215526083062351539694423
1312761729218326373090354439974451
1413041758221126653118357240264479
1513321786224026933147360040544508

Measurements

Other measurements are also taken of each baby. These include the following:

  • Head circumference. The distance around the baby's head.
  • Abdominal circumference. The distance around the abdomen.
  • Length. The measurement from crown of head to the heel.
  • Vital signs:
    • Temperature (able to maintain stable body temperature in normal room environment)
    • Pulse (normally 120 to 160 beats per minute in the newborn period)
    • Breathing rate (normally 40 to 60 breaths per minute in the newborn period)
  • General appearance. Physical activity, tone, posture, and level of consciousness.
  • Skin. Color, texture, nails, presence of rashes.
  • Head and neck:
    • Appearance, shape, presence of molding (shaping of the head from passage through the birth canal)
    • Fontanels (the open "soft spots" between the bones of the baby's skull)
    • Clavicles (bones across the upper chest)
  • Face. Eyes, ears, nose, cheeks.
  • Mouth. Palate, tongue, throat.
  • Lungs. Breath sounds, breathing pattern.
  • Heart sounds and femoral (in the groin) pulses.
  • Abdomen. Presence of masses or hernias.
  • Genitals and anus. For open passage of urine and stool
  • Arms and legs. Movement and development.

Picture  of a newborn in the neonatal intensive care unit

Physical examination

A complete physical examination is an important part of newborn care. Each body system is carefully examined for signs of health and normal function. The doctor also looks for any signs of illness or birth defects. Physical examination of a newborn often includes the assessment of the following:

Gestational assessment

Assessing a baby's physical maturity is an important part of care. Maturity assessment is helpful in meeting a baby's needs if the dates of a pregnancy are uncertain. For example, a very small baby may actually be more mature than it appears by size, and may need different care than a premature baby.

An examination called The Dubowitz/Ballard Examination for Gestational Age is often used. A baby's gestational age often can be closely estimated using this examination. The Dubowitz/Ballard Examination evaluates a baby's appearance, skin texture, motor function, and reflexes. The physical maturity part of the examination is done in the first two hours of birth. The neuromuscular maturity examination is completed within 24 hours after delivery. Information often used to help estimate babies' physical and neuromuscular maturity are shown below.

Physical maturity

The physical assessment part of the Dubowitz/Ballard Examination looks at physical characteristics that look different at different stages of a baby's gestational maturity. Babies who are physically mature usually have higher scores than premature babies.

Points are given for each area of assessment, with a low of -1 or -2 for extreme immaturity to as much as 4 or 5 for postmaturity. Areas of assessment include the following:

  • Skin textures (for example, sticky, smooth, or peeling).
  • Lanugo (the soft downy hair on a baby's body). Absent in immature babies, then appears with maturity, and then disappears again with postmaturity.
  • Plantar creases. These creases on the soles of the feet range from absent to covering the entire foot, depending on the maturity.
  • Breast. The thickness and size of breast tissue and areola (the darkened ring around each nipple) are assessed.
  • Eyes and ears. Eyes fused or open and amount of cartilage and stiffness of the ear tissue.
  • Genitals, male. Presence of testes and appearance of scrotum, from smooth to wrinkled.
  • Genitals, female. Appearance and size of the clitoris and the labia.

Neuromuscular maturity

Six evaluations of the baby's neuromuscular system are performed. 

A score is assigned to each assessment area. Typically, the more neurologically mature the baby, the higher the score. The areas of assessment include:

  • Posture. How does the baby hold his or her arms and legs.
  • Square window. How far the baby's hands can be flexed toward the wrist.
  • Arm recoil. How much the baby's arms "spring back" to a flexed position.
  • Popliteal angle. How far the baby's knees extend.
  • Scarf sign. How far the elbows can be moved across the baby's chest.
  • Heel to ear. How close the baby's feet can be moved to the ears.

When the physical assessment score and the neuromuscular score are added together, the gestational age can be estimated. Scores range from very low for immature babies (less than 26 to 28 weeks) to very high scores for mature and postmature babies.

All of these examinations are important ways to learn about your baby's well-being at birth. By identifying any problems, your baby's doctor can plan the best possible care.

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