Nursing manager Linda Bevan said there were "omissions in a number of areas in Paul's care".
She is now being questioned about changes since Mr Ridd's death. His special needs meant he couldn't communicate very well and nurses didn't notice how much he had deteriorated.
Nursing manager Linda Bevan says nurses should have consulted Mr Ridd's family to help recognise his signs of distress.
More top news
The Dogs Trust says it's planning to deliver over a hundred parcels to help homeless dogs and their owners in Wales this Christmas.
Health Secretary Vaughn Gething has confirmed NHS bursaries for eligible students will still be available next year, unlike in England.
FIFA bosses will hear the FAW's case today after Wales fans wore poppies during a recent World Cup Qualifier.