
Very-preterm survival rose over 16 years, but complication-free survival remained flat
AI-summarized from the linked source. Educational brief, not medical advice.
Brief summary
A population-based Swiss cohort of 12,453 infants born before 32 weeks found that survival increased from 85.4% in 2006-2011 to 89.7% in 2017-2021, while survival without major complications remained near 72%.
What NurseJet pulled from the source
The largest survival gains occurred among infants born before 26 weeks. Delivery-room mortality fell from 6.0% to 4.1%, and NICU mortality fell from 8.6% to 6.2%. Among survivors, bronchopulmonary dysplasia and retinopathy of prematurity increased over time, necrotizing enterocolitis increased only among infants born at 25 weeks, and cystic periventricular leukomalacia declined.
Why this matters for nurses
Improved survival changes the case mix and follow-up needs of neonatal intensive care without guaranteeing fewer complications. Pediatric nurses can use gestational-age-specific outcome trends to frame quality review, reinforce complication surveillance, and support careful, individualized family communication.
Bedside takeaway
Survival improved for very preterm infants, but survival without major complications remained near 72% across 16 years.
How This Applies in Practice
Use this when: Reviewing neonatal outcomes, surveillance priorities, or family education for infants born before 32 weeks.
On your shift
- Use local gestational-age-specific outcome data and approved counseling resources instead of applying national cohort averages to one infant.
- Maintain protocol-based surveillance for respiratory, neurologic, gastrointestinal, and ophthalmic complications as survival improves.
- Include complication-free survival and longer-term follow-up needs when reviewing unit quality trends with the interdisciplinary team.
Key takeaways
- The Swiss Neonatal Network followed 12,453 live-born infants delivered before 32 weeks across three periods from 2006 through 2021.
- Overall survival increased from 85.4% to 89.7%, with the greatest improvement before 26 weeks' gestation.
- Survival without major complications stayed near 72%, and major morbidities affected 17.3% of survivors.
- Bronchopulmonary dysplasia and retinopathy of prematurity increased among survivors, while cystic periventricular leukomalacia declined.
Practice implications
- Use local gestational-age-specific data and approved counseling materials when discussing expected outcomes, because this national cohort cannot predict an individual infant's course. Continue protocol-based surveillance and preventive care for respiratory, neurologic, gastrointestinal, and ophthalmic complications.
Limitations & cautions
- These population-level trends are observational and cannot identify which care changes caused the outcomes. The data come from Switzerland through 2021, major complications were reported as grouped outcomes, and the results cannot determine prognosis for an individual infant or transfer directly to another health system.
- AI-summarized from the linked source. Review the original article before applying to practice.
Citations
Exact source links
Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.
BMJ Paediatrics Open (PubMed)
BMJ Paediatrics Open (PubMed). Mortality and morbidity in very preterm infants in Switzerland spanning 16 years (2006-2021).
https://pubmed.ncbi.nlm.nih.gov/42521445/
Professional education only


