12:30pm
The next witness, who cannot be named due to reporting restrictions, confirms she was a neonatal unit nurse at the Countess of Chester Hospital in June 2015.
She tells the court night shifts would be "generally quieter" in terms of staffing numbers, and there were no set rules on when they would take breaks, and would depend on workloads.
When they were on breaks, another member of staff would be directed to cover for the designated baby. That role could be done by the shift leader.
12:34pm
The nurse confirms she was the designated nurse for two babies in room 2 on the night shift of June 21.
She said she cannot remember having any cause to be involved with Child D on the early part of that night.
A medicine chart is presented to the court showing the nurse was a co-signer for doses of medication for Child D at 9.23pm.
12:38pm
The nurse says her memory of Child D's collapse at 1.30am is "vague", but remembers her being "stiff" and having a "rash" on her abdomen.
She says she does not remember whether she was in the room at the time of the collapse.
She says, from her statement, colleague Caroline Oakley (the designated nurse) was not present in the room at that time.
She recalls Child D's appearance - the baby girl was 'discoloured' and "stiff". The discolouration "was like a mottled appearance", it was "an odd rash, it was unusual".
She said mottling would be blue and grey, whereas this was "not that colour". She said it was a "reddy brown" colour, which was "unusual", and this was found on Child D's abdomen.
12:41pm
The nurse says she wants to say she had seen this discoloured appearance again, but could not say whether that was before or after June 2015.
Asked by the prosecution to clarify, she tells the court she had not seen that discolured skin appearance in the years prior to that.
The nurse remembers Child D recovered quickly and was examined by Dr Andrew Brunton.
She says, from her notes, the rash had 'resolved' by that point.
12:42pm
The nurse added a similar event happened for Child D where she desaturated. She does not remember the circumstances but believed it was similar where she was given treatment, reviewed, and recovered.
She said she didn't remember seeing Child D, but would have done so as part of her shift. She said she didn't remember anything about the child's appearance or recovery.
12:46pm
The nurse tells the court there was further desaturating for Child D, she would have been notified to the room - but does not recall how - and there was a call for a medical review.
Full CPR was being carried out on Child D by the time Dr Brunton arrived in the room, the nurse tells the court.
12:52pm
The nurse recalls the efforts made to resuscitate Child D, which were made in established guidelines, and ultimately efforts were not successful.
She recalls the parents were there at the time.
After Child D had died, she recalls having a conversation with Lucy Letby on the resuscitation drugs used.
A chart advising dose levels for the drugs would usually be kept by the child, but this A4 chart, a laminated piece of paper, was missing.
The nurse said that chart was missing, and the resuscitation drugs were administered by calculating the doses with Child D's weight, and using her years of experience.
The chart "eventually turned up", the court hears, as "it must have gone missing in the stress of everything".
Lucy Letby asked the nurse how she knew what dose levels to give, and the nurse explained how she had done so.
The trial of Lucy Letby, who denies murdering seven babies at the Countess of Chester Hospital neonatal unit and attempting to murder 10 more,…
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