Indeed, fluffywuffy, show trial describes what this was very well.
Multiple accounts confirm the enalapril dose was given by the parents an hour prior to the arrest. The child had been clinically improving up to that point.
The supervising/on call consultant it appears was attending a course in Warwick instead of being on-site, which is bizarre in the extreme. He appears to have legged it to work in Ireland with no obvious sanctions.
She was, as indicated in multiple accounts, doing the work of 4 doctors, simultaneously dealing with another critically ill child, and doing lengthy procedures like lumbar punctures at the same time.
The nurse looking after the patient (who has also been struck off for not informing her early enough of the deterioration) was an adult nurse drafted in at the last minute to work on the paeds ward due to staff shortages - he had no prior paediatric nursing training.
It stinks to high heaven but she's a convenient scapegoat.