Children's heart surgery is set to re-start at Leeds General Infirmary early next week.
Operations were suspended just over a week ago after concerns were raised about death rates at the unit.
Doctors and other medical experts said the information had not been verified and should not have been used to base a decision on halting surgery for children born with heart problems.
Managers at the Leeds Teaching Hospitals NHS Trust said work would be done over the weekend to provide sufficient assurance that the service is safe.
Maggie Boyle, chief executive of the trust, said: "I am extremely confident that this service is safe and effective and should recommence at the earliest opportunity.
"I want partner organisations to be as confident in the service as I am."
Sir Bruce Keogh, medical director of NHS England, said the figures were among a "constellation of reasons" the decision to halt surgery at Leeds was made.
His decision to suspend surgery came a day after a High Court judge ruled that the decision-making process to close it as part of an NHS review of children's heart surgery services was "flawed".
The review, which is currently being considered by the Government's Independent Reconfiguration Panel, has also said that surgery should be moved from Leicester's Glenfield Hospital to Birmingham.• Read more Leicester and Leicestershire health stories atwww.thisisleicestershire.co.uk/health
