11:02am
The judge says shift leader and designated nurse for Child D in room 1 on June 21-22, was Caroline Oakley.
Letby was designated nurse for two other babies in room 1.
Child D was on 'nasal CPAP in air', with 'satisfactory' gases.
The readings for 7.30pm-12.30am were all normal and she was 'happy' with Child D, who was "breathing beautifully in air".
Aspirates found had 'minimal importance to them' as Child D was not being fed at this time.
Caroline Oakley said she assumed she began an infusion at 1.25am, being the designated nurse, but the writing on the infusion note was not hers.
One of the nurses on duty was aware Caroline Oakley had been on her break, and checked Child D, who was fine.
While she was at her computer, she was alerted to alarms, and found the monitor was showing Child D was desaturating at 1.30am.
She recalled Letby was there.
She noted Child D had a rash on her trunk and arms, and was 'not a normal rash' - like a 'mosaic', like 'vessels of blood meeting with each other'.
She had not seen anything like it before, she said.
She said 'her trunk and legs went a mottling colour, and it was odd'.
She discussed it with Dr Andrew Brunton.
Child D settled and discolouration 'seemed to disappear and dissipate'.
Caroline Oakley said the rash was 'different to mottling' and it was 'an unusual rash'.
She "had an episode but responded very quickly".
Another senior nurse said she had a limited memory of events. she remembered Child D being stiff and having a rash on her trunk, which was an 'odd, unusual rash'.