The number of urgent treatments have increased slightly since the pandemic began and just over a fifth of all courses of treatment in 2021-22 were urgent.
Mae nifer y triniaethau brys wedi cynyddu rhywfaint ers dechrau'r pandemig ac roedd ychydig dros un rhan o bump o’r holl gyrsiau o driniaeth yn 2021-22 yn rhai brys.