Smartphone app accurately predicts if pregnant women are at risk of giving birth prematurely

A smartphone app that accurately predicts if pregnant women are at risk of giving birth prematurely could save lives, the British inventors say.  

QUiPP v2 helps doctors quickly calculate the likelihood of an early delivery on a scale of zero to 100.

This score is based on a number of clinical symptoms, the woman’s childbirth history, and other biomarkers.

It ensures high-risk women who need special care receive it quickly, but also helps medics reassure women when their risk is low. 

Hopes have been raised that it could slash the number of babies born early each year in the UK, while also saving the NHS money treating premature babies. 

When babies are born before 37 weeks of pregnancy, they are more likely to die, or have physical, developmental and emotional problems. 

A smartphone app that works out if a pregnant woman is at risk of a premature birth could save lives, the British inventors say (stock) 

In the UK, around 60,000 babies are born prematurely each year, a rate of around 7.5 per cent. Some 1,500 babies do not survive being born so early. 

Premature birth can lead to long-lasting health problems for both mother and baby.

Researchers are looking for better ways to predict how likely a mother is to go into premature labour, so that they can get the right care at the right time.

Patient Safety Minister, Nadine Dorries said: ‘The joy a newborn brings can be cruelly contrasted alongside the fear when a baby is born too soon. 

‘Being able to identify mothers at risk of a pre-term birth as early as possible can help clinicians to intervene sooner, improve safety and ultimately save lives.

‘We want the NHS to be the safest place in the world to give birth and the harnessing of promising digital innovations such as this is another stepping stone on this shared journey.’

A team of researchers from the Department of Women & Children’s Health, King’s College London, have been creating the mobile app QUiPP for a number of years.

Guy’s and St Thomas’ Charity, the National Institute for Health Research and leading baby charity Tommy’s have been supporting the research. 

Already, an earlier version of QUiPP is being used by doctors to help treat patients. However, it has now been improved.

‘QUiPP v2’ calculates the risk based on a woman’s individual risk factors, such as previous preterm birth, late miscarriage or symptoms.

It takes into consideration quantitative fetal fibronectin (fFn), a protein which keeps the amniotic sac attached to the lining of the uterus.

If the ‘glue’ is broken, such as by contractions of an infection, fetal fibronectin is secreted around the cervix and can be picked up with a swab.

Doctors can also input the length of the cervix or ‘neck of the womb’ into QUiPP. When the cervix shortens too soon, preterm labour increases. 

The app then produces a simple individual percentage risk score. 

In two papers, published in Ultrasound in Obstetrics and Gynecology, the authors show how they developed and tested the complicated algorithms in the app. 

Lead author Dr Jenny Carter, of UCL, said: ‘We are delighted to be able to share the findings of our work which shows that the QUiPP app is very reliable in predicting preterm birth in women at risk. 

‘This should mean that women who need treatments are offered them appropriately, and also that doctors and women can be reassured when these treatments are not needed, which reduces the possibility of negative effects and unnecessary costs for the NHS.’

The authors have recently completed the EQUIPTT trial, a parallel study across 14 maternity units in England over a year.

It aimed to evaluate how successful the app is and whether it improves targeting of care. Results of this trial are expected later on this year.   

WHAT IS A PREMATURE BIRTH, AND WHAT ARE THE RISKS TO BABIES?

Around 10 per cent of all pregnancies worldwide result in premature labour – defined as a delivery before 37 weeks.

When this happens, not all of the baby’s organs, including the heart and lungs, will have developed. They can also be underweight and smaller.

Tommy’s, a charity in the UK, says this can mean preemies ‘are not ready for life outside the womb’.  

Premature birth is the largest cause of neonatal mortality in the US and the UK, according to figures. 

Babies born early account for around 1,500 deaths each year in the UK. In the US, premature birth and its complications account for 17 per cent of infant deaths.

Babies born prematurely are often whisked away to neonatal intensive care units, where they are looked after around-the-clock.  

What are the chances of survival?

  • Less than 22 weeks is close to zero chance of survival
  • 22 weeks is around 10%
  • 24 weeks is around 60%
  • 27 weeks is around 89%
  • 31 weeks is around 95%
  • 34 weeks is equivalent to a baby born at full term