Andrew Hutchinson is due to be sentenced on 27 April
A former senior hospital nurse has admitted raping, sexually assaulting and spying on female patients including some who were unconscious.
Andrew Hutchinson, who worked at John Radcliffe Hospital in Oxford, pleaded guilty to 27 counts including rape, voyeurism and sexual assault.
The 29-year-old also admitted spying on women at a leisure centre and sexually assaulting women at a music festival.
His victims were aged between 10 and 35, Oxford Crown Court heard.
Hutchinson, from Abingdon, sexually assaulted four unconscious women, in curtained areas in the hospital's A&E department and at Wilderness music festival.
He also used a camera to spy on women and children at the White Horse Leisure Centre in Abingdon.
The offences took place between 2011 and 2013.
Hutchinson was sacked by the hospital after he was arrested.
He was arrested by Thames Valley Police on suspicion of voyeurism offences at the leisure centre in November 2013 and charged in December last year.
Police also found images on devices, including a mobile phone, a memory stick and a camera, seized from Hutchinson which revealed other incidents.
He has been remanded for sentencing on 27 April.
Police said all identifiable victims had been contacted and given support.
Det Ch Insp Mark Johns described the case as "complicated and unusual" as the victims of sexual assault were not conscious.
"I have no doubt that Hutchinson would have continued to offend had he not been arrested," he said.
Mark Power, from Oxford University Hospitals NHS Trust, said: "Our thoughts today are with the victims, whose trust was so betrayed in our hospital and elsewhere.
"I would wish to reassure members of the public that the welfare and safety of our patients is always our first priority."