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Growth and development for premature babies

22-minute read

Key facts

  • A premature or pre-term baby is a baby born before 37 weeks of pregnancy.
  • The earlier your baby is born, the higher their chance of having delays with their growth and development.
  • It's important for your baby to have regular check-ups with your doctor or child health nurse.
  • Some premature babies will have difficulty with their growth and development.
  • You can support your baby by playing with them in an age-appropriate way.

What is a premature baby?

Babies who are born early are known as premature or preterm babies. They are more likely not to meet their growth and development milestones. The earlier in pregnancy your baby is born, the more difficulties they might have.

Your baby may need to spend time in a special care (SCN) or intensive care nursery (NICU).

There are categories which depend on when your baby was born.

Premature babies can face more challenges than babies born at full-term (at least 37 weeks). This is because they've had less time to grow and develop in your uterus. They may also need to stay in hospital longer.

Babies born before 32 weeks of pregnancy may also face more problems with their:

How can I support my premature baby's growth and development?

Contact with your skin is very important to help you bond with your baby. You may like to try kangaroo care.

Giving your premature baby a massage can help them put on weight. It also encourages relaxation and sleep.

You can support your baby's development by playing with them. You can try:

It's important to give your baby tummy time. This helps them learn to control their head. Always watch your baby during tummy time.

If you are concerned about your baby's development, contact your doctor or child and family nurse.

How might prematurity affect my baby's health?

If your baby is born early, they can have a range of health problems. These problems may be more severe or milder depending on how early your baby was born.

Lung problems — a premature baby's lungs are small and immature. Your baby may need some help with their breathing.

Heart problems — premature babies may have problems with low blood pressure after birth.

Feeding difficulties — premature babies can't suck from your breast as well as full-term babies. You can give your baby expressed breast milk through a tube. Your health team will help you do this.

Infection — premature babies have an immature immune system. They are at risk of blood and bowel infections.

Jaundice — 8 in 10 premature babies get jaundice. Jaundice is when your baby's liver hasn't developed enough to clear waste products.

Brain problems — some premature babies get brain damage due to problems with oxygen reaching their brain. There is also a chance that they may have an intraventricular haemorrhage (brain bleed).

Eye problems — some babies get retinopathy (the blood vessels in the back of their eyes grow too fast).

When should my baby have their vaccinations?

If your baby is well, they should have their vaccinations according to the for their age.

Premature babies usually react well to vaccinations.

Being premature means their immune system is less developed. Your baby may be at higher risk of some vaccine-preventable illnesses.

Your baby might need an extra dose of some vaccines. This is to give them the best protection from the disease. Your doctor will talk about this with you.

How might prematurity affect my baby's development?

Most premature babies go on to develop like babies born at term. But the earlier that your premature baby was born, the more likely it is that they'll face problems in their development.

Some conditions related to premature birth are:

You might notice some of these when your child is a baby or a toddler. Other issues may not show up until they go to school or not at all.

It's not expected that a premature baby will be at the same developmental stage as a baby born at term. This is because premature babies need some time to catch up, particularly in the early months after their birth.

Most babies that are born prematurely don't have serious disabilities later in life.

What developmental milestones should I expect?

It's helpful to know which developmental milestones your baby should be reaching at their corrected age.

You'll be able to tell if your baby is reaching the developmental milestones for their age.

Corrected age Your baby will probably be able to:

1 to 2 months corrected

  • smile
  • make eye contact
  • move their arms and legs
  • respond to sounds

4 months corrected

  • laugh and make sounds
  • turn their head to find a voice
  • hold their head up
  • hold a toy if you put it in their hand
  • put their hands and toys in their mouth
  • lift up their head and chest while lying on their tummy

6 months corrected

  • sit while supported
  • roll over
  • reach out to take a toy
  • pass toys from one hand to the other
  • control their head movement
  • bear their weight on their legs while being held

9 months corrected

  • babble with many different sounds
  • sit up by themselves
  • crawl or pull themselves across the floor
  • recognise people they see often
  • react when you call their name

12 months corrected

  • pull themselves up to stand
  • walk around holding furniture (cruising)
  • try to feed themself
  • be anxious or wary of strangers
  • enjoy looking at picture books
  • say "Dada" or "Mama"

18 months corrected

  • scribble with a pencil
  • help to dress themself
  • drink from a cup
  • point to things they want
  • use 3 words other than names
  • understand simple directions
  • sit in a small chair

2 years corrected

  • play next to other children
  • run
  • climb up things at the playground
  • kick a ball
  • eat with a spoon
  • use about 50 words
  • put 2 words together
  • follow 2-part instructions
  • name at least 5 parts of their body

Remember that each baby develops in their own way, and there is a range of what's normal.

When should my baby start solids?

Your baby can usually start solids at a corrected age of 3 months. It's important to start solids by 7 months chronological age to balance:

The exact timing will depend on:

Speak to your doctor or child health nurse for advice on when to start offering solid foods to your baby.

Signs that your baby is ready to start solids

Your baby is ready to start solids if:

Try offering your baby a variety of healthy foods.

How might prematurity affect my baby's growth?

Premature babies grow differently to babies who are born at term.

Your baby's growth will depend on their:

Your baby will be measured against their corrected age. This happens until they are 2 years of age or have caught up.

How will my premature baby's growth and development be checked?

All children in Australia can see a child and family health nurse for free. Your child health nurse will weigh and measure your baby.

These visits are timed at important stages in your child's development, from birth until they start school.

This helps find issues as early as possible so your baby can be offered treatment and support.

Babies born before 32 weeks

If your baby was born before 32 weeks, they have a higher chance of growth and development delays.

Your baby should be offered specific follow up care after they leave the hospital.

At a minimum you should see your doctor or child health nurse at:

Your doctor will refer your baby to other healthcare professionals for any health concerns. Depending on your baby, these may include:

How do growth charts work?

A growth chart is a graph that shows how your baby is growing over time, compared to other children.

Each time your baby is weighed and measured, a mark is made on the chart. These marks are compared to the curved lines on the chart. The lines on the chart represent the usual growth pattern.

There are growth charts for:

There are different charts for male and female babies.

When should I see a doctor?

If your child is less than 3 months old and develops a fever over 38°C call triple zero (000) and ask for an ambulance or take them to the closest emergency department immediately.

You should see a doctor urgently if your baby:

If you are concerned about your baby's growth or development, talk to your doctor or child health nurse.

Always tell your health professional that your baby was premature.

Resources and support

If you need support, visit the or call their on 1300 622 243.

The also has information and support — you can call them on 1300 697 736.

You can also call the on 1300 773 672.

has information on premature babies, including in languages other than English.

The can offer advice and support on feeding your baby on 1800 686 268.

Find a health service

Need further advice or guidance from our maternal child health nurses?

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