An independent review panel is visiting the Children's Heart Unit at the Freeman Hospital in Newcastle later.
They are investigating a decision, made earlier this year, to close some hospitals and create centres of excellence.
It is part of a move to improve the service and concentrate expert surgeons in bigger units.
The panel was ordered to carry out the review by the Department of Health.
More top news
As Sunderland fans come to terms with another relegation, ITV News Tyne Tees asks how it will impact the city financially and culturally.
The small County Durham community surrounding the cemetery say they are 'heartbroken' after several headstones were ruined.
Some people our region have been camped out for 15 days hoping for a glimpse of the newest addition to the Royal family.