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
Patchy rain and drizzle will continue this evening and overnight. Winds will remain brisk with temperature staying on the mild side.
With Christmas around the corner, we'd like to see your pets getting in the spirit in their festive outfits.
ITV News has spoken to one social worker who says the system is unsafe, blighted by bullying and high case loads.