Cardiff experts develop test to spot risk of shaken baby syndrome

Experts in child protection have developed a test designed to help doctors recognise children suffering from life-threatening physical abuse and enable child protection services to protect them from future harm.

Abusive Head Trauma (AHT) – sometimes referred to as ‘shaken baby syndrome’ – is the leading cause of death among children who are abused. It is estimated that as many as 34 in every 100,000 infants less than one year of age are victims of AHT, though the true figure is unknown because many cases of AHT are missed and others may not come to the attention of clinicians.

To address this, researchers at Cardiff University have developed and validated a diagnostic test to help doctors determine how likely it is that a child with head injuries – aged less than two years old – has been abused. Their findings are described in a paper published in the journal Pediatrics.

With a proven accuracy, the easy-to-use test uses a checklist of six clinical signs to give different likelihoods of AHT to help clinicians in their decision-making. These signs include fractured ribs, long bone fractures, suspended breathing, seizures, retinal bleeding and head or neck bruising.

If following an assessment doctors identify three or more of these signs and no clear accidental cause has been established, then abuse is a very likely cause of the head injury. Further investigations by a team of clinicians and child protection professionals are then required to confirm or exclude AHT.

“It is vitally important that abusive head trauma is diagnosed accurately so that the team looking after the child can ensure that they receive appropriate support and are protected from further harm,” said lead researcher Professor Alison Kemp from the University’s School of Medicine.

“Equally important is that accidental head injuries are not wrongly diagnosed as abusive, as this can have devastating consequences for the families involved.

“However, arriving at these decisions can be extremely difficult – especially for doctors who do not see many cases of severe child abuse. This study offers an evidence-based clinical prediction tool to help doctors make these extremely important decisions, where the life or death of a child often hangs in the balance.

“Essentially, we are combining the scientific evidence at the doctor’s fingertips.”

Professor Kemp is quick to point out that in order to arrive at an accurate diagnosis, the findings of the test must be assessed in combination with all the other information available about the circumstances of the child’s injury and its family.

In an era when the diagnosis of AHT continues to be contested in public and legal arenas, Professor Kemp says that the test can provide doctors with an additional diagnostic aid, rooted in scientific evidence, to support their decisions.

Previous studies estimate that half of all children younger than two years old, who have traumatic brain injury, have suffered from AHT.

Following preliminary investigations, the so-called ‘Pred-AHT’ test could play an important role in helping doctors to identify children who have suffered from AHT and exclude those who have not.

The researchers say that the test will be of enormous value not only to front-line doctors, but also to other agencies involved in child protection decision making such as the police, legal practitioners, social workers, the judiciary and forensic pathologists. Their focus now lies in implementing Pred-AHT into practice.

The National Institute for Social Care and Health Research (NISCHR) funds this project, which is still ongoing.