Adam Cairns, the Chief Executive of Cardiff and Vale University Health Board - which runs the University Hospital of Wales - spoke to ITV News this evening.
He told Jonathan Hill that the findings of the report by the Royal College of Surgeons are "troubling, worrying and unacceptable".
He said the primary problem - of getting patients into the hospital - caused cancellations of planned procedures, and needs to be tackled with a "much more resilient plan" in future.
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The grass pollen season is on the rise. We have moderate levels today but these will fall as the weather turns unsettled!
Most of us will have anther beautiful day today, but there is change on the way! Cloud and rain will push in to the east later!
A joint charity initiative is urging workers in Wales to leave the office at lunchtime to help protect their wellbeing.