from opening speeches -
For Child I, the defence say her death was a result of "ongoing clinical problems caused by her extreme prematurity".
The air embolus is "not accepted" as a cause by the defence. The defence say CPAP treatment may have caused 'CPAP belly' in Child I, causing a distended abdomen.
Lucy Letby trial recap: Prosecution finishes outlining case, defence gives statement
The defence do not accept Letby caused any harm to Child I and her "collapses and ultimately death were part of a series of clinical problems which may well have been inevitable given her extreme prematurity.”
https://www.itv.com/news/granada/20...n-alleged-to-have-been-murdered-by-lucy-letby
I haven't been able to find what the prosecution experts said for all four collapses, but here's Daily Mail write up of prosecution opening which may give some idea -
[1st collapse] -
"X-rays revealed a massive amount of gas in her stomach and bowel, and her lungs appeared 'squashed' and of small volume. It was the prosecution case that this
air had been injected into the baby's stomach."
[Final collapse] -
"He [Dr Evans] also believed an
IV bolus of air had been injected into her bloodstream around midnight on October 22-23. 'In support of that, he points to Baby I screaming – followed quickly by her collapse,' Mr Johnson said. "
[...]
"Mr Johnson told the jury: 'Baby I was born very early and very small. But she survived the first two months of her life and was doing well by the time Lucy Letby got her hands on her.
'What happened to Baby I followed the pattern of what had happened to others before and what was yet to happen to others. All of a sudden, out of nowhere, came vomiting, breathing problems and critical desaturations'.
In the first incident there had been a vomit followed by lots of air and some milk; in the second Letby had been seen 'coolly watching Baby I who was in crisis';
in the third the infant pumped with air; and in the fourth the designated nurse returning in response to the alarm and finding Letby standing over her."
Lucy Letby 'tried to kill baby girl four times before succeeding'
The prosecution said the post mortem showed
no sign of NEC or any other bowel problem.
Lucy Letby trial recap: Prosecution finishes outlining case, defence gives statement
See the timeline I posted above, they were awaiting an examination of the bowel but baby I died a matter of days before that was due to take place.