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."
During the study, of the 357 infants admitted to the neonatal unit at 22-25 weeks gestation, 163 (45 per cent) survived to discharge from the unit. 161 were alive for medical assessment at one year of age, which included a neurological examination, a developmental assessment and tests of visual and auditory function. Approximately one quarter of the infants showed signs of impairment leading to disability at one year of age – a figure which stayed fairly constant over the assessment period.
Commenting on the results, Professor Wyatt said: "The survival of extremely premature infants has been a matter of recent debate. A previous study of all extremely premature infants born alive in the UK and Ireland (the EPICure study) gave substantially lower survival rates than we report here, and it has been argued that there has been no improvement in survival across the country as a whole since EPICure was undertaken in 1995.
"However, studies which average the results from a large number of maternity units obscure the effects of very marked variations in resources, staffing and experience in the care of extremely premature infants. It is also plausible that ethical and clinical policies vary between different units and there is published evidence to show that this will have an effect on survival rates.
"We fully acknowledge that single centre studies such as this one have statistical limitations because of the relatively small numbers involved and they can also suffer from the problems of possible selection bias. However, they are hugely important because they provide information on the survival rates that can be achieved with consistent levels of staffing and resources, and with consistent policies. They also allow counselling of women who deliver at the hospital to be based upon data that are relevant to their individual situation."
Ruth Metcalfe | alfa
Diagnoses: When Are Several Opinions Better Than One?
19.07.2016 | Max-Planck-Institut für Bildungsforschung
High in calories and low in nutrients when adolescents share pictures of food online
07.04.2016 | University of Gothenburg
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
24.10.2016 | Earth Sciences
24.10.2016 | Life Sciences
24.10.2016 | Physics and Astronomy