Cynon Valley MP Ann Clwyd has called for an inquiry into the levels of care at the University Hospital of Wales - and for Cardiff and Vale University Health Health Board's chair, chief executive and board members to resign.
She complained about the poor treatment her husband received at the hospital, before he died in October 2012.
She is conducting a review into complaints by hospital patients in England, and told our reporter Sarah Hibbard that the situation at the University Hospital of Wales could be compared to Stafford Hospital, where it is thought hundreds may have died due to poor care between 2005 and 2008.
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It will become drier in the early hours setting us up for a fine start to Wednesday
Showers in the north will spread southeastwards overnight. Temperatures will be higher so not as chilly as list night.
Chilly start to Tuesday, turning into a largely fine and dry day.