It's not clear - hopefully it was in court - when that refers to. It says at one point "The blood sample for Child G is taken at 3.59am."The blood gases were taken after the vomiting, and after the baby’s O2 sats had dropped to 17%. 17%, it’s a wonder she’s still alive. A blood oxygen level this low is going to cause acidosis, and obviously worse, like severe brain damage.
If so, that is prior to the severe desat at 17%. Also they were apparently shown the full blood gas record, which we don't get to see. Some of the clinical decisions seem questionable to me, such as the decision to extubate which was followed by that severe desaturation and then a reintubation, but maybe they are getting a clearer picture