A lung surfactant for premature babies with breathing difficulty
Poractant alfa
A lung surfactant given into the lungs of premature babies to treat respiratory distress syndrome.
What is Poractant alfa?
Poractant alfa is a lung surfactant, a substance that helps tiny air sacs in the lungs stay open. It is used in newborn intensive care to treat or prevent respiratory distress syndrome in premature babies, whose lungs are not yet making enough of their own surfactant. It is given directly into the baby's lungs through a breathing tube by specialist staff. During and just after it is given, the baby's oxygen level or heart rate can dip briefly, and the tube can become temporarily blocked, so the baby is closely monitored throughout. It is made from an animal (pig) source.
Education and reference only. This is a plain-language guide to Poractant alfa — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Poractant alfa is a lung surfactant used in premature newborn babies who have, or are at risk of, respiratory distress syndrome. This condition happens because very premature babies have not yet made enough of their own surfactant, the natural substance that stops the tiny air sacs in the lungs from collapsing. Without it, the lungs are stiff and breathing is very hard. Poractant alfa is a replacement surfactant, made from a pig (porcine) source, and is given directly into the baby's lungs through a breathing tube. It is used only in neonatal units by specialist teams.
How it works
In healthy lungs, surfactant coats the inside of the tiny air sacs and lowers surface tension, so the sacs do not collapse each time the baby breathes out. Premature babies often lack enough of their own surfactant, so their lungs are stiff and breathing takes great effort. Poractant alfa replaces this missing substance: given into the lungs, it spreads over the air sacs, helping them stay open and making the lungs easier to inflate. This improves oxygen levels and eases the work of breathing, often allowing breathing support to be reduced over the following hours.
Company & origin
Originated / developed by: Specialist manufacturer.
An animal-derived lung surfactant given in newborn intensive care in the UK to premature babies with respiratory distress syndrome.
Practical use
How to take Poractant alfa
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- It is given by specialist neonatal staff directly into the baby's lungs through a breathing tube, not by parents.
- The baby is closely monitored during and after each dose, as oxygen levels and heart rate can dip briefly.
- Staff watch for and clear any temporary blockage of the breathing tube during dosing.
- Breathing support and oxygen are adjusted soon after, as the lungs often improve quickly.
- The team will explain that it is made from a pig source and answer any questions families have.
Weighing it up
Advantages & disadvantages of Poractant alfa
Advantages
- Helps the tiny air sacs in a premature baby's lungs stay open, easing very difficult breathing.
- Can improve oxygen levels and reduce the breathing support needed, often quite quickly.
- A well-established treatment for respiratory distress syndrome in newborn intensive care.
Disadvantages
- Can only be given in hospital, into the lungs through a breathing tube, by specialist staff.
- Oxygen levels and heart rate can dip, and the breathing tube can become briefly blocked, during dosing.
- It is made from an animal (pig) source, which matters to some families.
Practical use
Good to know
The key thing to understand is that poractant alfa is a hospital, newborn-intensive-care treatment, given by specialist staff straight into a baby's lungs through a breathing tube, not a medicine used at home. During and shortly after it is given, it is common for the baby's oxygen level or heart rate to dip for a short time, and the breathing tube can become temporarily blocked by the liquid, so staff watch the baby very closely and are ready to respond. After it is given, the lungs often work better quite quickly, which means the breathing support and oxygen the baby needs may have to be reduced promptly to avoid giving too much. It is made from a pig source, which is discussed with families where this matters. The neonatal team manages all of this.
Who should not take it / use with caution
- It is used only in newborn babies under specialist neonatal care, not in older children or adults.
- It is given with caution and close monitoring in babies who are very unstable, by the neonatal team.
- Families for whom an animal-derived product is a concern should discuss this with the team.
Monitoring
- Continuous monitoring of the baby's oxygen levels, heart rate and breathing during and after dosing.
- Adjusting breathing support and oxygen as the lungs respond.
- Watching for complications such as lung bleeding, managed by the neonatal team.
Side effects
- A brief dip in oxygen levels or heart rate during or just after it is given.
- Temporary blockage of the breathing tube by the liquid, which staff clear.
- Rarely, bleeding into the lungs or other serious problems, which the neonatal team watches for and manages.
Key interactions
- It is given as part of intensive newborn care, where all treatments are managed together by the team.
- Breathing support settings are adjusted around it, as the lungs often improve soon after dosing.
- There are no routine at-home medicine interactions, as it is a hospital-only treatment.
Available as: A liquid suspension given into the lungs through a breathing tube.
Answers
Poractant alfa: frequently asked questions
What is poractant alfa used for?
It is a lung surfactant given to premature babies with respiratory distress syndrome, helping the tiny air sacs in their lungs stay open so breathing is easier.
How is it given?
It is given by specialist neonatal staff directly into the baby's lungs through a breathing tube, in newborn intensive care.
Why does the baby need close monitoring?
During and just after dosing the baby's oxygen level or heart rate can dip and the breathing tube can become briefly blocked, so staff watch closely and respond quickly.
Is it made from animals?
Yes, it is made from a pig (porcine) source, which the team can discuss with families where this is important.
Does it work quickly?
The lungs often improve fairly soon after it is given, which is why the breathing support and oxygen may need reducing promptly.
Authoritative sources
- BNF
- NICE CKS
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