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JUDGE'S SUMMING UP - Monday 3rd July 2023
Day 1- Morning Session
LIVE: Lucy Letby trial, July 3 - judge's summing up
8:36am
Today, trial judge Mr Justice James Goss is expected to begin his summing up of the case, a process which is expected to last this week. Members of the jury have already been told they will not be sitting on Friday, July 7.
The judge has already given his preliminary directions of law to the jury. These were given prior to the prosecution and defence closing speeches, the latter of which concluded last Friday.
10:26am
The trial is now resuming.
The judge, Mr Justice James Goss, is beginning his summing up.
He says the prosecution case is there was deliberate harm at the Countess of Chester Hospital neonatal unit, sometimes repeated attempts on the same infants, and some of those babies died.
He says after Child O and Child P died, and Child Q collapsed on successive days in June 2016, Lucy Letby was confined to clerical duties.
10:29am
He reminds the jury of the background to the offences alleged on the indictment.
He says the Countess of Chester Hospital is, and was, busy.
He says the jury are now familiar with the tertiary system of hospitals, with the Countess a level 2 unit, routinely providing care to babies of 27+ weeks gestation. The jury have been provided with a guide, and walkthrough recordings, of the unit.
One room, 'room one', the ICU room, had four incubators and two computers plus other pieces of equipment. Room two was the HDU, rooms three and four were special care babies rooms.
10:31am
He says the last evidence heard was from Lorenzo Mansutti, an experienced plumber at the Countess of Chester Hospital.
The Women's and Children's building was built in the 1960s and there were issues with the plumbing, and there was an incident between 2015-2016 where the hand basin backed up with foul water. There was another incident where room 4's floor flooded after a back-up sink overflowed. None of the incidents reported happened on the days when the alleged offences took place.
10:34am
Consultant Dr John Gibbs had said in evidence it would have been better if there were more consultants, but refused to say the staffing level at the time compromised the care of neonatal infants.
He says every year, up to 2015, the number of deaths at the neonatal unit was within the number to be expected, and less than the national average.
Between 2015-2016, the number of deaths "increased significantly", including the number of "unusual" events. The defence said this was a consquence of higher admissions and a higher number of infants with more complex needs.
10:37am
In evidence, Letby was asked about her relationship with other staff. She said she had "no problem or issue" with any of the doctors and had a "normal working relationship" with them "at the time", except for one female doctor she did not get on that well with.
She said she "loved one [male] doctor as a friend", but there was no loving relationship between the the two.
She later said four doctors had "conspired against her falsely" - Dr Stephen Breary, Dr Ravi Jayaram, Dr John Gibbs and one other.
10:40am
The judge says the evidence given by witnesses behind screens, or from remote locations on videolinks, should not be diminished in any way. He adds their evidence should be judged in the same way as any other witness in the case.
He says established BAPM 'gold standard' guidelines had one designated nurse to one ICU baby, one nurse to two HDU babies, and one nurse to four special care babies.
He says nursing notes would be written retrospectively on computers. They had an accurate electronic timing of the start and completion of the note.
10:44am
He says nurses were asked about staffing levels.
The court had heard from one nurse: "Sometimes there were more babies [on the unit] than there were meant to be". 2015-2016 "was a busy period" with more babies with higher acuity.
Staff "were giving up breaks" to provide care.
"It was always quite busy," said another nurse.
Dr Stephen Breary accepted nursing levels were lower than the gold standard guidelines. He added their levels were similar to other neonatal units, and staffing levels were better than those around Cheshire units. The court heard the other units did not have the mortality levels.
10:48am
The judge says the jury should consider if sub-optimal care was a factor in the collapses of the babies. He says in a few cases, it is accepted there was sub-optimal care.
He said Letby accepted herself that sub-optimal care played little or no part in most of the babies' cases.
He says [defence barrister] Benjamin Myers KC repeatedly suggested that doctors "had gone out of their way" to "damage" the defendant by blaming her for sub-optimal failures in care. He says she "did nothing to harm any baby".
He says it is up to the jury to find who is telling the truth and who is "reliable".
He adds he is not going to put a single document up for the jury to look at, as they have all the documents.
10:51am
He says in two cases, two babies received insulin when it was "wholly inappropriate" to do so. Each of them - Child F, Child L - was a twin. He says the prosecution say there is "no doubt" it was added intentionally.
He says the prosecution say the chances of more than one person acting in that way [administering insulin] is not realistic.
He adds the defence invite the jury to question the samples, and the "lack of harm" caused by the infants if they had been poisoned by insulin.
He says the prosecution say the intention was "endangering the lives" of the two babies.
10:55am
The judge says the prosecution referred to a list of reoccurring factors for babies in the case.
He says for the defence, they say Letby was a committed, hard-working nurse, and if there was someone intent on harming children, it was not her.
The judge now gives the background to Letby, starting as a nurse at the Countess of Chester Hospital in 2012 as a band 5 nurse.
The court had heard Letby "always strived to go on every course she could".
In March/April 2015, Letby had completed a six-month course - including a placement at Liverpool Women's Hospital - she qualified in the speciality of caring for intensive care babies. She was the only band 5 nurse [along with colleague Bernadette Butterworth] to have that qualification.
11:02am
The judge says Letby has no previous convictions. He says it is entirely for the jury to attach the weight of the defendant's previous character.
Letby had said she had cared for hundreds of babies, and that hurting a baby was completely against everything a nurse is.
Colleague Christopher Booth "confirmed" she was "conscientious, hard-working, and willing to help", and another colleague said Letby would "remain friends" with the parents of babies on Facebook.
Eirian Powell said Letby was "an exceptionally good nurse".
Letby had a "passion" for working in the intensive care side, and "staff knew" she enjoyed that side of care.
The judge says Letby's health was good, and she did not take time off work in 2015-2016. She was "flexible", living at Ash House [accommodation at the Countess], then at a flat between 2014-2015, then back to Ash House until April 6, 2016, to Westbourne Road, Chester.
Letby was "often asked to do more" than the required number of shifts per month.
She was "devastated" when taken off clinical duties in 2016. She had "prided herself" on being very competent.
Letby registered a grievance in September 2016. It was at that time she learned she was being blamed for the deaths, and that that was "sickening", and her mental health "deteriorated".
She was arrested at her home in July 2018. She was interviewed, then moved to Hereford to be with her parents. A search was conducted of her Chester home.
11:06am
The arrest "traumatised" Letby, she said.
A defence statement was confirmed by her on February 11, 2022. The judge says some of it differs from the police interviews.
He refers to his next legal direction, on the defence statement.
He says if the jury find "a material difference" between the two statements, the jury are entitled to ask themselves why.
He says the defence say the task was made more difficult by the delays in bringing the case, and the volume of evidence served.
He says if the jury are sure there is a 'material difference', and they do not believe the defendant is telling the truth on the reason for those differences, then that should be in support of the prosecution case.
He says the jury must not convict on the basis of those changes alone.
11:08am
The judge refers to delays in the case.
He says the jury should take into account the passage of time since the events, and the impact that might have on the witnesses and the defendant in recalling them.
11:15am
The judge refers to expert witnesses who have given evidence in the case.
He says the jury would expect to hear evidence from experts with relevant expertise. Their role is to be a witness, not an advocate.
He says the defence have criticised that evidence, and will come to that when going through the relevant cases.
He says the jury are entitled to consider their opinions when coming to conclusions on the case. It is up to them to consider some or all of their evidence.
He says their evidence is part of the case, and the jury should not consider it in isolation, and should be considered in the context of expert, clinical and relevant circumstantial evidence.
The experts did exclude some reasons for collapses based on their own knowledge and expertise.
11:17am
He says he will turn to the relevant cases. He says the material is dense, and is conscious of the circumstances in which they happened, and does not intend to be insensitive. He reminds the jury of his initial direction for the jury to treat the case on the evidence, not on emotion.
He adds he is conscious the jury has already heard nine days of closing speeches.
[Child A]
11:22am
He refers to the case of Child A - the twin of Child B.
He recalls the events of their birth and the collapse.
Child A's cause of death was "unascertained". The prosecution case is Child A did not die of any natural cause, but instead had air deliberately injected intravenously system with the intention to kill.
The defence say Letby did nothing to harm Child A, and raised issues with the long line.
11:35am
The judge details what neonatal unit staff were recorded, and recalled, doing for Child A before the collapse. He says there were issues siting a cannula "as can happen".
A long line was later inserted by registrar Dr David Harkness.
Nurse Melanie Taylor came on duty. Child A was "stable and satisfactory", and the nurse "had no concerns". She ended her shift at 8pm, and handed over to the defendant, who had come in at 7.27pm. She confirmed a 10% dextrose bag had been prescribed, to be given via the long line.
All three babies that night in room 1 required long lines - Child A, Child B and one other.
Dr Harkness was unsure if the long line was in the perfect position. He believed it was "imperfect", but good enough to be used.
Dr Dewi Evans said the position was not a problem, and there was no evidence of the end of the line puncturing the heart lining. He said if there was, it would show up on a post-mortem examination. Dr Sandie Bohin said it was "not in an optimal position" but "safe to use".
Melanie Taylor said she was sitting at the computer in room 1 when Child A started to deteriorate.
The alarms sounded, and Melanie Taylor went over, thinking the baby was going to recover. She said Letby was administering Neopuff. She says it "was a bit of a blur".
Letby said she was not initially intending to work that night shift, but was "happy to help" after being asked to work. "There was a lot going on", and she said Melanie Taylor, "being the sterile nurse", was administering fluids.
Child A's hands and feet were "white" at the time of the desaturation - 'centrally pale and poor perfusion'.
An emergency crash call was put out.
11:42am
Dr Rachel Lambie had said Child A 'looked like Child B', pale and blotchy all over. The defence said her original police statement referred to Child A being pale, with white hands.
She thought there was a "lot of discussion" over the rashes. She said no-one had told her what to say on them.
The defence "draw your attention" to the difference, the judge says.
11:42am
The judge's next legal direction is on differences in evidential statements.
He says what a witness says in the witness box is all evidence for consideration. He says where there are, or appear to be, differences in accounts, it is for the jury to decide how different those accounts are, and how important they are.
He says if there are important differences, they should consider them, and the explanations given. He says if the jury do not accept their explanations, they should treat the witness' evidence with caution. If the explanations are accepted, then the evidence can be treated as such.
He says it is "really no more than a common-sense approach" "to see where the truth lies".
11:48am
Dr Harkness had given a description of the 'blotchy' rash, saying it was only seen again by him in the case of Child E. The defence criticised him for not including the description in medical notes at the time or in notes to the coroner.
Dr Ravi Jayaram had said it was "highly unusual" in the way that Child A was deteriorating and his heart rate fell even after intubation. At the time, he noted Child A's pale skin.
His explanation for not including the 'pink patches' skin discolouration to the coroner - mentioning it to the police later - was "he had not considered it clinically relevant" at the time. He said it was "a matter of regret" he had not mentioned them.
He says he could not explain how Child A collapsed.
He said he read a document in a medical paper about skin discolouration in a case of air embolus. He said he had not been influenced by that paper when it came to that explanation.
12:14pm
The trial is resuming after a short break.
The judge is continuing the summing up, in the case of Child A.
He recalls what Letby had said in police interview, and recalled 'red, purple blotchy markings' on Child A, which she thought were signs of an infection.
She believed there was an issue with the long line, and Melanie Taylor had connected the fluids to Child A.
Child A's death was not expected or anticipated. She said she thought the bag of fluid was 'not what they thought it was', but they had checked it afterwards.
She said she did not keep in touch with the parents, and did not recall what she did with the handover notes.
She said she did not know much about air embolisms, and all staff were "meticulous" about precautionary checks to prevent that happening. She denied pushing air through the line.
She could not recall using social media to search for the mother of Child A, and when asked to explain searches for the mother on Facebook, said she could not do so.
Letby said the fluid bag should be contained and put in the sluice room for checking.
She said staffing levels contributed to the death of Child A, citing difficulties with the long line and Child A's lack of fluids for several hours.
She said if air embolus was the cause, Melanie Taylor was responsible. She disagreed with the descriptions of skin discolouration given by a nursing colleague and Dr Harkness.
She said searching for the parents was a "common pattern of behaviour" for her.
12:25pm
The judge says Mr Myers "repeatedly expressed his opinions" on the merits of the expert evidence, questioning and challenging them. He says that is his right, but it is up to the jury to determine the reliability of the expert evidence.
The judge refers to Prof Owen Arthurs' evidence, who "considered each case on its own merits".
Prof Arthurs was provided with radiograph images of Child A. He noted the umbilical catheter was "slightly in the wrong place", and there was "a line of gas in front of the spine" on one of the images, which was "an unusual finding". He said it was "so unusual", he reviewed other cases at Great Ormond Street Hospital, to compare for a similar images. He said such gas would normally only be seen in heavy impacts such as road traffic incidents - this could obviously be discounted.
The other usual case would be "overwhelming infection" in organs of the body, such as sepsis, but Child A did not have any such identifiers.
He said he had "not seen this much gas" in any baby, other than in the case of Child D. He said it was 'consistent with air administered' to him, but 'not diagnostic' of it.
In cross-examination, he said he found no unexplained cases, and accepted this was an observational study, not a controlled study - the judge says for obvious reasons, the latter could not be carried out.
12:29pm
Prof Arthurs said radiographic evidence of air embolus was "rare", and in suspected cases, seeing anything on the radiograph was "rare". He said the absence of it on the radiograph did not rule that cause out.
He said one of the reasons is the imaging of the event is not important, the main priority is to save the life. An x-ray taken an hour later "wouldn't show anything".
12:41pm
The judge refers to expert witness Dr Andreas Marnerides' evidence.
His expertise, the court is told, is on the pathology of conditions on those who had died.
He said there was "no evidence of infection" or "any other abnormalities".
He said he could see, from his study, "empty structures" of fat or air in Child A - after testing, he ruled out the former.
He said he could see evidence of air in the brain when the baby was alive.
The findings "could not be taken as absolute proof of air embolus".
He said there was "no evidence of any natural cause of death", or any of natural disease.
He took the view that Child A's death was of air embolus via injection.
12:54pm
The judge refers to Dr Dewi Evans, and his role in providing background evidence for Child A.
He said: "On the whole, babies don't suddenly collapse".
He said Child A was the fifth case he looked at, and the cause of the collapse was "unusual". He said as he looked at further cases, he noticed a "pattern", as he received more evidence.
He said Dr Evans' evidence came for criticism by the defence. He had not been in practice since 2009, and the defence said he had "constructed theories" and "acted as an investigator" and was "biased", " putting himself forward...at the outset".
The judge says the prosecution point to a large number of incidents for review with "no apparent reasons for an event or death". They point to Dr Evans' long experience in neonatalogy, and provided "clear evidence" in Child F and Child L that identified two babies on the unit were being poisoned. The prosecution say Dr Evans was not handed other potentially incriminating evidence, such as shift patterns for staff.
Dr Evans said Child A was "stable" and "as well as could be expected" before the collapse. Repeated attempts to insert a UVC or long line may have caused upset to Child A, but would not have caused the collapse, he said. The lack of fluids "would not make a material difference".
'Bright pink' skin discolouration would be unusual in a baby's collapse - but skin discolouration is "not diagnostic" of an air embolus alone, Dr Evans said.
He denied he had been "influenced" in reaching his conclusion by a 1989 medical paper. He said in Child A's case, there had been colour change, sudden and unexpected collapse, air in various parts of the body, and no explanation for death. He said it was probably an air embolus intravenously.
1:02pm
The judge refers to Dr Sandie Bohin, and her evidence for Child A.
He says the defence accused her of lacking independence, and "enthusiastically supported" Dr Evans' evidence. She repeatedly denied this assertions, and said her views were her own. The judge says it is up to the jury to assess the validity of the defence's assertions.
Dr Bohin said neither the UVC or long line contributed to Child A's collapse. She said Child A was "so well", that there was consideration to giving him feeds, and babies doing well do not develop pink fluctuating rashes that come and go.
She said, excluding other possibilities, air embolus was the "only plausible explanation", and believed air getting in accidentally "was extremely unlikely".
Studies on air emboli should be "treated with caution" as they are on adults or animals, she said.
In cross-examination, she said she did not know of any genetic condition that would cause a collapse and death within 24 hours of birth.
Day 1- Morning Session
LIVE: Lucy Letby trial, July 3 - judge's summing up
8:36am
Today, trial judge Mr Justice James Goss is expected to begin his summing up of the case, a process which is expected to last this week. Members of the jury have already been told they will not be sitting on Friday, July 7.
The judge has already given his preliminary directions of law to the jury. These were given prior to the prosecution and defence closing speeches, the latter of which concluded last Friday.
10:26am
The trial is now resuming.
The judge, Mr Justice James Goss, is beginning his summing up.
He says the prosecution case is there was deliberate harm at the Countess of Chester Hospital neonatal unit, sometimes repeated attempts on the same infants, and some of those babies died.
He says after Child O and Child P died, and Child Q collapsed on successive days in June 2016, Lucy Letby was confined to clerical duties.
10:29am
He reminds the jury of the background to the offences alleged on the indictment.
He says the Countess of Chester Hospital is, and was, busy.
He says the jury are now familiar with the tertiary system of hospitals, with the Countess a level 2 unit, routinely providing care to babies of 27+ weeks gestation. The jury have been provided with a guide, and walkthrough recordings, of the unit.
One room, 'room one', the ICU room, had four incubators and two computers plus other pieces of equipment. Room two was the HDU, rooms three and four were special care babies rooms.
10:31am
He says the last evidence heard was from Lorenzo Mansutti, an experienced plumber at the Countess of Chester Hospital.
The Women's and Children's building was built in the 1960s and there were issues with the plumbing, and there was an incident between 2015-2016 where the hand basin backed up with foul water. There was another incident where room 4's floor flooded after a back-up sink overflowed. None of the incidents reported happened on the days when the alleged offences took place.
10:34am
Consultant Dr John Gibbs had said in evidence it would have been better if there were more consultants, but refused to say the staffing level at the time compromised the care of neonatal infants.
He says every year, up to 2015, the number of deaths at the neonatal unit was within the number to be expected, and less than the national average.
Between 2015-2016, the number of deaths "increased significantly", including the number of "unusual" events. The defence said this was a consquence of higher admissions and a higher number of infants with more complex needs.
10:37am
In evidence, Letby was asked about her relationship with other staff. She said she had "no problem or issue" with any of the doctors and had a "normal working relationship" with them "at the time", except for one female doctor she did not get on that well with.
She said she "loved one [male] doctor as a friend", but there was no loving relationship between the the two.
She later said four doctors had "conspired against her falsely" - Dr Stephen Breary, Dr Ravi Jayaram, Dr John Gibbs and one other.
10:40am
The judge says the evidence given by witnesses behind screens, or from remote locations on videolinks, should not be diminished in any way. He adds their evidence should be judged in the same way as any other witness in the case.
He says established BAPM 'gold standard' guidelines had one designated nurse to one ICU baby, one nurse to two HDU babies, and one nurse to four special care babies.
He says nursing notes would be written retrospectively on computers. They had an accurate electronic timing of the start and completion of the note.
10:44am
He says nurses were asked about staffing levels.
The court had heard from one nurse: "Sometimes there were more babies [on the unit] than there were meant to be". 2015-2016 "was a busy period" with more babies with higher acuity.
Staff "were giving up breaks" to provide care.
"It was always quite busy," said another nurse.
Dr Stephen Breary accepted nursing levels were lower than the gold standard guidelines. He added their levels were similar to other neonatal units, and staffing levels were better than those around Cheshire units. The court heard the other units did not have the mortality levels.
10:48am
The judge says the jury should consider if sub-optimal care was a factor in the collapses of the babies. He says in a few cases, it is accepted there was sub-optimal care.
He said Letby accepted herself that sub-optimal care played little or no part in most of the babies' cases.
He says [defence barrister] Benjamin Myers KC repeatedly suggested that doctors "had gone out of their way" to "damage" the defendant by blaming her for sub-optimal failures in care. He says she "did nothing to harm any baby".
He says it is up to the jury to find who is telling the truth and who is "reliable".
He adds he is not going to put a single document up for the jury to look at, as they have all the documents.
10:51am
He says in two cases, two babies received insulin when it was "wholly inappropriate" to do so. Each of them - Child F, Child L - was a twin. He says the prosecution say there is "no doubt" it was added intentionally.
He says the prosecution say the chances of more than one person acting in that way [administering insulin] is not realistic.
He adds the defence invite the jury to question the samples, and the "lack of harm" caused by the infants if they had been poisoned by insulin.
He says the prosecution say the intention was "endangering the lives" of the two babies.
10:55am
The judge says the prosecution referred to a list of reoccurring factors for babies in the case.
He says for the defence, they say Letby was a committed, hard-working nurse, and if there was someone intent on harming children, it was not her.
The judge now gives the background to Letby, starting as a nurse at the Countess of Chester Hospital in 2012 as a band 5 nurse.
The court had heard Letby "always strived to go on every course she could".
In March/April 2015, Letby had completed a six-month course - including a placement at Liverpool Women's Hospital - she qualified in the speciality of caring for intensive care babies. She was the only band 5 nurse [along with colleague Bernadette Butterworth] to have that qualification.
11:02am
The judge says Letby has no previous convictions. He says it is entirely for the jury to attach the weight of the defendant's previous character.
Letby had said she had cared for hundreds of babies, and that hurting a baby was completely against everything a nurse is.
Colleague Christopher Booth "confirmed" she was "conscientious, hard-working, and willing to help", and another colleague said Letby would "remain friends" with the parents of babies on Facebook.
Eirian Powell said Letby was "an exceptionally good nurse".
Letby had a "passion" for working in the intensive care side, and "staff knew" she enjoyed that side of care.
The judge says Letby's health was good, and she did not take time off work in 2015-2016. She was "flexible", living at Ash House [accommodation at the Countess], then at a flat between 2014-2015, then back to Ash House until April 6, 2016, to Westbourne Road, Chester.
Letby was "often asked to do more" than the required number of shifts per month.
She was "devastated" when taken off clinical duties in 2016. She had "prided herself" on being very competent.
Letby registered a grievance in September 2016. It was at that time she learned she was being blamed for the deaths, and that that was "sickening", and her mental health "deteriorated".
She was arrested at her home in July 2018. She was interviewed, then moved to Hereford to be with her parents. A search was conducted of her Chester home.
11:06am
The arrest "traumatised" Letby, she said.
A defence statement was confirmed by her on February 11, 2022. The judge says some of it differs from the police interviews.
He refers to his next legal direction, on the defence statement.
He says if the jury find "a material difference" between the two statements, the jury are entitled to ask themselves why.
He says the defence say the task was made more difficult by the delays in bringing the case, and the volume of evidence served.
He says if the jury are sure there is a 'material difference', and they do not believe the defendant is telling the truth on the reason for those differences, then that should be in support of the prosecution case.
He says the jury must not convict on the basis of those changes alone.
11:08am
The judge refers to delays in the case.
He says the jury should take into account the passage of time since the events, and the impact that might have on the witnesses and the defendant in recalling them.
11:15am
The judge refers to expert witnesses who have given evidence in the case.
He says the jury would expect to hear evidence from experts with relevant expertise. Their role is to be a witness, not an advocate.
He says the defence have criticised that evidence, and will come to that when going through the relevant cases.
He says the jury are entitled to consider their opinions when coming to conclusions on the case. It is up to them to consider some or all of their evidence.
He says their evidence is part of the case, and the jury should not consider it in isolation, and should be considered in the context of expert, clinical and relevant circumstantial evidence.
The experts did exclude some reasons for collapses based on their own knowledge and expertise.
11:17am
He says he will turn to the relevant cases. He says the material is dense, and is conscious of the circumstances in which they happened, and does not intend to be insensitive. He reminds the jury of his initial direction for the jury to treat the case on the evidence, not on emotion.
He adds he is conscious the jury has already heard nine days of closing speeches.
[Child A]
11:22am
He refers to the case of Child A - the twin of Child B.
He recalls the events of their birth and the collapse.
Child A's cause of death was "unascertained". The prosecution case is Child A did not die of any natural cause, but instead had air deliberately injected intravenously system with the intention to kill.
The defence say Letby did nothing to harm Child A, and raised issues with the long line.
11:35am
The judge details what neonatal unit staff were recorded, and recalled, doing for Child A before the collapse. He says there were issues siting a cannula "as can happen".
A long line was later inserted by registrar Dr David Harkness.
Nurse Melanie Taylor came on duty. Child A was "stable and satisfactory", and the nurse "had no concerns". She ended her shift at 8pm, and handed over to the defendant, who had come in at 7.27pm. She confirmed a 10% dextrose bag had been prescribed, to be given via the long line.
All three babies that night in room 1 required long lines - Child A, Child B and one other.
Dr Harkness was unsure if the long line was in the perfect position. He believed it was "imperfect", but good enough to be used.
Dr Dewi Evans said the position was not a problem, and there was no evidence of the end of the line puncturing the heart lining. He said if there was, it would show up on a post-mortem examination. Dr Sandie Bohin said it was "not in an optimal position" but "safe to use".
Melanie Taylor said she was sitting at the computer in room 1 when Child A started to deteriorate.
The alarms sounded, and Melanie Taylor went over, thinking the baby was going to recover. She said Letby was administering Neopuff. She says it "was a bit of a blur".
Letby said she was not initially intending to work that night shift, but was "happy to help" after being asked to work. "There was a lot going on", and she said Melanie Taylor, "being the sterile nurse", was administering fluids.
Child A's hands and feet were "white" at the time of the desaturation - 'centrally pale and poor perfusion'.
An emergency crash call was put out.
11:42am
Dr Rachel Lambie had said Child A 'looked like Child B', pale and blotchy all over. The defence said her original police statement referred to Child A being pale, with white hands.
She thought there was a "lot of discussion" over the rashes. She said no-one had told her what to say on them.
The defence "draw your attention" to the difference, the judge says.
11:42am
The judge's next legal direction is on differences in evidential statements.
He says what a witness says in the witness box is all evidence for consideration. He says where there are, or appear to be, differences in accounts, it is for the jury to decide how different those accounts are, and how important they are.
He says if there are important differences, they should consider them, and the explanations given. He says if the jury do not accept their explanations, they should treat the witness' evidence with caution. If the explanations are accepted, then the evidence can be treated as such.
He says it is "really no more than a common-sense approach" "to see where the truth lies".
11:48am
Dr Harkness had given a description of the 'blotchy' rash, saying it was only seen again by him in the case of Child E. The defence criticised him for not including the description in medical notes at the time or in notes to the coroner.
Dr Ravi Jayaram had said it was "highly unusual" in the way that Child A was deteriorating and his heart rate fell even after intubation. At the time, he noted Child A's pale skin.
His explanation for not including the 'pink patches' skin discolouration to the coroner - mentioning it to the police later - was "he had not considered it clinically relevant" at the time. He said it was "a matter of regret" he had not mentioned them.
He says he could not explain how Child A collapsed.
He said he read a document in a medical paper about skin discolouration in a case of air embolus. He said he had not been influenced by that paper when it came to that explanation.
12:14pm
The trial is resuming after a short break.
The judge is continuing the summing up, in the case of Child A.
He recalls what Letby had said in police interview, and recalled 'red, purple blotchy markings' on Child A, which she thought were signs of an infection.
She believed there was an issue with the long line, and Melanie Taylor had connected the fluids to Child A.
Child A's death was not expected or anticipated. She said she thought the bag of fluid was 'not what they thought it was', but they had checked it afterwards.
She said she did not keep in touch with the parents, and did not recall what she did with the handover notes.
She said she did not know much about air embolisms, and all staff were "meticulous" about precautionary checks to prevent that happening. She denied pushing air through the line.
She could not recall using social media to search for the mother of Child A, and when asked to explain searches for the mother on Facebook, said she could not do so.
Letby said the fluid bag should be contained and put in the sluice room for checking.
She said staffing levels contributed to the death of Child A, citing difficulties with the long line and Child A's lack of fluids for several hours.
She said if air embolus was the cause, Melanie Taylor was responsible. She disagreed with the descriptions of skin discolouration given by a nursing colleague and Dr Harkness.
She said searching for the parents was a "common pattern of behaviour" for her.
12:25pm
The judge says Mr Myers "repeatedly expressed his opinions" on the merits of the expert evidence, questioning and challenging them. He says that is his right, but it is up to the jury to determine the reliability of the expert evidence.
The judge refers to Prof Owen Arthurs' evidence, who "considered each case on its own merits".
Prof Arthurs was provided with radiograph images of Child A. He noted the umbilical catheter was "slightly in the wrong place", and there was "a line of gas in front of the spine" on one of the images, which was "an unusual finding". He said it was "so unusual", he reviewed other cases at Great Ormond Street Hospital, to compare for a similar images. He said such gas would normally only be seen in heavy impacts such as road traffic incidents - this could obviously be discounted.
The other usual case would be "overwhelming infection" in organs of the body, such as sepsis, but Child A did not have any such identifiers.
He said he had "not seen this much gas" in any baby, other than in the case of Child D. He said it was 'consistent with air administered' to him, but 'not diagnostic' of it.
In cross-examination, he said he found no unexplained cases, and accepted this was an observational study, not a controlled study - the judge says for obvious reasons, the latter could not be carried out.
12:29pm
Prof Arthurs said radiographic evidence of air embolus was "rare", and in suspected cases, seeing anything on the radiograph was "rare". He said the absence of it on the radiograph did not rule that cause out.
He said one of the reasons is the imaging of the event is not important, the main priority is to save the life. An x-ray taken an hour later "wouldn't show anything".
12:41pm
The judge refers to expert witness Dr Andreas Marnerides' evidence.
His expertise, the court is told, is on the pathology of conditions on those who had died.
He said there was "no evidence of infection" or "any other abnormalities".
He said he could see, from his study, "empty structures" of fat or air in Child A - after testing, he ruled out the former.
He said he could see evidence of air in the brain when the baby was alive.
The findings "could not be taken as absolute proof of air embolus".
He said there was "no evidence of any natural cause of death", or any of natural disease.
He took the view that Child A's death was of air embolus via injection.
12:54pm
The judge refers to Dr Dewi Evans, and his role in providing background evidence for Child A.
He said: "On the whole, babies don't suddenly collapse".
He said Child A was the fifth case he looked at, and the cause of the collapse was "unusual". He said as he looked at further cases, he noticed a "pattern", as he received more evidence.
He said Dr Evans' evidence came for criticism by the defence. He had not been in practice since 2009, and the defence said he had "constructed theories" and "acted as an investigator" and was "biased", " putting himself forward...at the outset".
The judge says the prosecution point to a large number of incidents for review with "no apparent reasons for an event or death". They point to Dr Evans' long experience in neonatalogy, and provided "clear evidence" in Child F and Child L that identified two babies on the unit were being poisoned. The prosecution say Dr Evans was not handed other potentially incriminating evidence, such as shift patterns for staff.
Dr Evans said Child A was "stable" and "as well as could be expected" before the collapse. Repeated attempts to insert a UVC or long line may have caused upset to Child A, but would not have caused the collapse, he said. The lack of fluids "would not make a material difference".
'Bright pink' skin discolouration would be unusual in a baby's collapse - but skin discolouration is "not diagnostic" of an air embolus alone, Dr Evans said.
He denied he had been "influenced" in reaching his conclusion by a 1989 medical paper. He said in Child A's case, there had been colour change, sudden and unexpected collapse, air in various parts of the body, and no explanation for death. He said it was probably an air embolus intravenously.
1:02pm
The judge refers to Dr Sandie Bohin, and her evidence for Child A.
He says the defence accused her of lacking independence, and "enthusiastically supported" Dr Evans' evidence. She repeatedly denied this assertions, and said her views were her own. The judge says it is up to the jury to assess the validity of the defence's assertions.
Dr Bohin said neither the UVC or long line contributed to Child A's collapse. She said Child A was "so well", that there was consideration to giving him feeds, and babies doing well do not develop pink fluctuating rashes that come and go.
She said, excluding other possibilities, air embolus was the "only plausible explanation", and believed air getting in accidentally "was extremely unlikely".
Studies on air emboli should be "treated with caution" as they are on adults or animals, she said.
In cross-examination, she said she did not know of any genetic condition that would cause a collapse and death within 24 hours of birth.