Premature babies and the neonatal unit

Around one in ten babies worldwide is born preterm, and almost no parent is prepared for what a neonatal unit looks like.

The categories

Preterm means before thirty-seven completed weeks.

Late preterm covers thirty-four to thirty-six weeks, moderate thirty-two to thirty-four, very preterm twenty-eight to thirty-two, and extremely preterm below twenty-eight.

Outcomes differ enormously across that range, and survival at the earliest gestations has improved substantially over recent decades in well-resourced settings.

Late preterm babies, who look almost like term babies, are frequently underestimated — they have higher rates of feeding difficulty, jaundice, temperature instability and readmission than term infants.

What the equipment is for

Demystifying the room.

An incubator maintains temperature and humidity, which very preterm babies cannot regulate.

Monitors display heart rate, breathing rate and oxygen saturation, and they alarm constantly for reasons that are usually trivial — a lead that has moved, a baby who has wriggled.

Nasal CPAP delivers continuous pressure to keep the lungs open.

Ventilators breathe for babies who cannot.

Lines deliver fluids, nutrition and medication.

Nasogastric tubes deliver milk to babies not yet able to feed by mouth.

Phototherapy lights treat jaundice.

Learning what each thing does reduces the fear considerably, and staff expect to be asked repeatedly.

What parents can do

More than most realise, and it matters clinically.

Kangaroo care — prolonged skin-to-skin contact — has strong evidence for temperature stability, breastfeeding, infection reduction and, in trials in several settings, survival.

Expressing milk, which is the single most valuable contribution to a preterm baby's care: mother's milk substantially reduces the risk of necrotising enterocolitis, a serious gut condition affecting preterm infants.

Donor milk is used in many units where a mother's own milk is not available.

Expressing should start as soon as possible after birth and continue frequently, including at night, with hospital-grade pumps generally available.

Touch, talking, reading and being present.

Participating in cares — nappy changes, mouth care, temperature taking — which units increasingly encourage as part of family-integrated care.

And asking questions at ward rounds, which parents are entitled to attend in most units.

The common complications

Explained briefly, since the words are used constantly.

Respiratory distress syndrome, from surfactant deficiency, treated with surfactant and respiratory support.

Apnoea of prematurity, pauses in breathing, treated with caffeine and support.

Patent ductus arteriosus, a persisting fetal blood vessel.

Necrotising enterocolitis, a serious gut inflammation.

Intraventricular haemorrhage, bleeding in the brain, graded by severity.

Retinopathy of prematurity, affecting the developing retina and requiring screening.

Jaundice, anaemia and infection.

And chronic lung disease, requiring prolonged oxygen in some babies.

Corrected age

An essential concept for afterwards.

Development and growth are assessed from the due date rather than the birth date, generally until around two years.

A baby born three months early is developmentally a newborn at three months of age.

Ignoring this produces unnecessary alarm and inappropriate comparisons.

Vaccinations, however, are given according to actual age rather than corrected age, because preterm babies are at higher risk of the infections concerned.

Going home

Usually around the original due date, though it varies.

Discharge criteria typically include maintaining temperature, feeding adequately, gaining weight and being free of apnoea.

Some babies go home with oxygen or feeding tubes, with community support.

A car seat challenge may be done, since preterm babies can desaturate in the semi-upright position.

Follow-up appointments will be arranged, frequently including developmental review, eye and hearing checks.

RSV prophylaxis is offered to eligible infants in many countries, and is worth asking about.

The parents

Where the need is greatest and the attention least.

Rates of anxiety, depression and post-traumatic stress are substantially elevated in parents of neonatal unit babies, and symptoms frequently emerge after discharge rather than during.

Practical realities: travelling to the unit daily, expressing round the clock, other children, work, and the emotional weight of a baby who might not survive.

Most units have psychological support, and charities in most countries provide peer support from parents who have been through it.

Using these is not a sign of not coping; it is the appropriate response to a genuinely traumatic situation.

And bringing the baby home does not end it — the hypervigilance frequently continues for months.

General information only, not medical advice. Consult your neonatal team about your baby's care, and ask about psychological and peer support for parents.