The Archbishop of York, Dr John Sentamu visited the Leeds children's heart unit today to lead prayers with patients and staff.
It comes after surgery was suspended following claims of high death rates, something doctors there say is "inaccurate and misleading."
Staff at the Children's Heart Unit at the Freeman hospital in Newcastle are preparing to take referrals whilst an investigation takes place.
A High Court judge has quashed part of an NHS consultation process vital for introducing "long overdue" changes to children's heart surgery services across the country.
The judge acted after recently ruling that the process was legally flawed in relation to the decision to close the children's heart unit at Leeds General Infirmary.
Sitting at London's High Court, Mrs Justice Nicola Davies, said aspects of the Leeds consultations, including a failure to make relevant information available to consultees, was "ill judged".
But she stressed today she was only quashing "one part" of the JCPCT decision so that there could be "re-consultation and reconsideration" over the Leeds closure.
Campaigners against plans to centralise children's heart surgery services in England won a legal victory today over a decision to close a unit at Leeds General Infirmary.
A High Court judge ruled that the consultation process leading to the NHS decision had been flawed.
The future of three children's heart units - in Leeds, Leicester and London - is still unclear, but campaigners are seeing today's ruling as a promising sign.
ITV News North of England Correspondent Martin Geissler reports:
Campaigners from Leeds have won a High Court challenge over proposed changes to children's heart surgery services in England.
Save Our Surgery (SOS), which is trying to stop the closure of the heart unit at Leeds General Infirmary, argued the consultation process leading up to the changes was "unfair and procedurally flawed".
ITV News reporter Michael Billington reports:
The future of England's children's heart surgery units will be revealed today following a controversial review.
The review could lead to the closure of some of the best known heart centres in the UK.