Survival rates for the most premature babies at a top London hospital have more than doubled over a 20 year period, according to research published in the latest edition of the journal Acta Paediatrica.
The study, led by researchers at University College London (UCL) and University College London Hospitals NHS Foundation Trust (UCLH), suggests significant improvements in survival rates can be achieved when maternity and neonatal units have consistent staffing, resources and treatment policies.
The research shows that the overall rates of survival for infants born alive between 22 and 25 weeks of gestation and admitted to the neonatal unit at UCLH increased from 32 per cent to 71 per cent between 1981 and 2000. This includes babies born in other hospitals and transferred to UCH for intensive care.
The researchers also looked at the survival of infants born at the hospital between 1991 and 2000, including those born at 22-25 weeks gestation who died before they reached intensive care. The survival rate for this group at the end of the study period was 69 per cent -- compared to 71 per cent for the group that included only babies admitted to the neonatal unit. This suggests that the results were not solely a consequence of selecting infants with a higher chance of survival.
The study was conducted by Professor John Wyatt, a UCLH consultant and professor at the UCL EGA Institute for Women's Health, in conjunction with the hospital's neonatal team, and is part of a larger, ongoing follow-up programme for all extremely premature babies cared for at UCLH.
There are in the region of 670,000 births in the UK each year and approximately 90 per cent of infants are born on time, at between 37 and 42 weeks gestation. However, around eight per cent of births are 'preterm' and these infants are usually cared for in specialist neonatal units. Significant advances in neonatal medicine over the last 20 years mean that preterm infants have a better chance of survival, although some will have profound disabilities.
Dr Jane Hawdon, UCLH clinical director for women's health, said: "These results are down to the joint working of skilled and specialist teams in maternity and neonatal care including the establishment of perinatal networks so the right babies are cared for in the right place.
"UCLH significantly increased its resources for providing neonatal care between 1981 and 2000, which included employing more staff and bringing in state-of-the-art equipment. Technical advances in neonatal care -- such as improved ventilation and nutrition -- have also contributed, as has the close communication between the maternity and neonatal teams so you can plan the best time of delivery for mother and baby. Our facilities will improve even more later in the year when the trust opens phase two of the new University College Hospital which will include a dedicated maternal high-dependency unit and 17 neonatal intensive care cots."