A mental health nurse left colleagues "shocked and distressed" when he sent them naked pictures and sexually explicit messages.
Derek Revie targeted 10 women - including two student nurses - at the Lanarkshire hospital where he worked.
Revie, of Manse View, Newarthill, appeared at Hamilton Sheriff Court today (Wednesday).
The 53-year-old admitted a string of offences committed between 2019 and 2021.
Rebecca Clark, prosecuting, said Revie had worked as a mental health nurse since 1989 and cared for patients with severe dementia.
He knew all of the nurses and students involved because he worked beside them and sent some of them a video of him masturbating.
Ms Clark told the court: "The victims speak of being shocked, disgusted and distressed.
"One woman said the video made her sick to the stomach."
Revie would often send further messages, apologising and blaming his behaviour on excessive drinking.
He begged one woman not to report him, saying he would lose his job, but one student nurse did complain after Revie targeted her in 2019.
He was interviewed by a manager, but claimed he'd sent an explicit photo by mistake and no action was taken against him at that time.
Another woman reported him to her line manager, but again it appeared nothing was done.
Referring to a later victim, Ms Clark said: "She was distressed by messages of a sexual nature, but did not want to report him for fear of jeopardising her student placement."
However, police were brought in after another nurse received a disgusting Facebook message from Revie in January last year. She told senior colleagues she no longer wanted to work with him.
Sheriff Ray Small deferred sentence until September for background reports and a risk assessment, also placing Revie on the sex offenders' register.
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