Dunedin Hospital is operating normally despite ongoing computer problems, Southern District Health Board says.
The DHB said for reasons that remain unclear, its main computer server rebooted itself at 1am on Monday, preventing computer access to patient information. The hospital is relying on paper records.
The medical director of patient services, Dick Bunton, said a claim by Labour Party MP David Clark that patient lives are at risk is scandalous.
Dr Bunton said X-rays are available and operations have been going ahead, with information such as lab tests being faxed to clinicians.
The problem has happened at a busy time and been inconvenient, but is not expected to affect many operations, he said.
"We've reviewed all the surgery that's going on tomorrow and there are no operations that will be cancelled because of that.
"The only reason that operations will be cancelled tomorrow is because there may be some issues of bed capacity - and that's not related to the IT problem."