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Development at

29-31 Weeks

Before Your Baby Is Born
  • Your baby is gaining weight.

  • Body muscle and fat are increasing.

  • Eyes open and close.

  • Bones are fully developed but are soft and flexible.

  • Babies born this early will need special care in the NICU to survive.

Appearance

  •  Babies at this age have red skin color, regardless of ethnic background. Natural skin color will develop over the next four weeks.

  • The ears are very soft and bend easily.

  • You will see soft, fine hair that covers the body. In some areas it may be very dark. This is called lanugo.

Tone and Posture

  • Muscle tone is improving.

  • Arms and legs are slightly bent.

  • The muscles in the legs will develop strength first. Your baby will attempt to pull legs up toward the stomach.

  • Baby’s head will fall back unless supported.

Movement

  • Nerves are not fully developed.

  • Movements are not smooth at this time. You may notice shaky or jerky movements.

  • Your baby is able to open and close hands.

  • Your baby is able to maintain a grip for a short period of time.

  • Planned movement is first seen in your baby’s legs.

Vision

  • Blinks or closes eyes tightly from light.

  • Has poor control of eye movements. Eye movements may be jerky.

  • Eyes may appear to be crossed.

  • By 29 weeks, your baby may be able to focus on an object and follow it.

Hearing

  • Your baby is unable to turn his or her head toward sound.

  • Your baby easily startles with loud noises.

  • Loud noises are stressful to the baby.

  • Soothing sounds help the baby to calm. He or she may stop moving, open mouth or widen eyes.

  • Your baby knows the sound of your voice and calms when he/she hears you speak.

Feeding

  • Your baby may be able to suck and swallow, but it will be slow and awkward.

  • Sucking can maker your baby tired.

  • Swallowing is irregular.

  • Gag reflex is not fully developed.

  • Babies at this age are still fed by a tube that goes through the nose or mouth to the stomach.

  • Your baby may benefit from non-nutritive sucking at the breast or with a pacifier.

Touching

  • A gentle touch may cause your baby to move and awaken.

  • Your baby may be awake for several minutes at a time.

  • Your baby may be able to tolerate longer periods of touching without becoming stressed or upset.

  • Painful procedures or stimulation will cause your baby to pull away and cry.

Behavior

  • At 28 weeks, your baby sleeps most of the time. As each week passes, the periods of alertness increase.

  • Your baby is able to focus on something for 30 to 60 seconds.

  • Your baby may become upset if he/she has too much activity.

Things to Do For Your Baby

  • Learn what normal behavior is for your baby and what causes your baby to be stressed.

  • Learn the cues that your baby gives you when he/she is ready to interact. These are called "I'm Ready" Behaviors.

  • Discover the type of touch that soothes and comforts your baby.

  • Learn how to lay your baby in comfortable positions.

  • Learn how to keep your baby tucked in the fetal position. This means bringing your baby’s legs and arms close to his/her stomach and chest.

  • Learn how to nest your baby in the isolette. This is called containment/ cradling. It is done by loosely wrapping your baby in a blanket and placing rolls completely around his/her body. This gives your baby boundaries on all sides and helps him/her stay in a tucked position.

  • Position your baby’s hands up close to his/her mouth or face whenever possible.

  • Support your baby’s head while holding.

  • Hold your baby wrapped in a blanket or skin-to-skin (kangaroo care). This is when mom or dad holds the baby on their chest, with the baby’s skin next to theirs.

  • Touch your baby with a firm caress rather than soft stroking movements.

  • Have the nurse instruct you on bathing techniques for your baby.

  • Once your baby can open his/her eyes, allow him/her quiet time to just focus. Babies have a hard time handling several things going on at a time, such as talking, looking around and being touched. Your baby can become very tired just trying to focus on you or an object.

  • Shield your baby’s eyes from bright lights.

  • If possible have your baby look at your face.

  • Bring in a blanket or afghan from home to cover your baby’s incubator. Your baby needs to be in a dark environment when sleeping and have periods of light during awake times.

  • Talk or read to your baby in a low quiet voice for short periods of time.

  • Offer a pacifier during tube feedings if you notice your baby making sucking movements.

  • Your baby needs sleep in order to grow.

  • Use only one form of interaction at a time with your baby, like speaking softly, rocking, or touching.

"I’m Overwhelmed" Behaviors (see "I’m Overwhelmed" Behaviors Section)

Minimal stimulation is best at this age. These behaviors may mean your baby is stressed or upset and needs rest.

  • Change in breathing patterns, heart rate or color.

  • A worried facial expression

  •  Frowning/grimacing

  • Limp posture

  • Looking away from you

  • Flailing arms or legs

  • Squirming

  • Tremors or startles

  • Spreading fingers apart (splaying)

  • Yawning

  • Crying/Fussing

  • Arching back and neck

"I'm Ready" Behaviors (see "I’m Ready" Behaviors Section)

Babies born at this age are capable of brief periods of social contact. These behaviors may mean your baby is ready to interact.

  • Relaxed arms, legs and facial expression.

  • Sucking on fingers or hands.

  • Awake and quiet with bright, shiny eyes.

  • Focused attention (looking).

© 2017 SCL Health, Saint Joseph Hospital NICU, Denver

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