Edrychwyd ar y profion diagnostig cardioleg ychwanegol rhwng mis Ebrill 2017 a mis Rhagfyr 2017. Yn ystod y cyfnod hwn, gostyngodd nifer y cleifion oedd yn aros dros wyth wythnos am eu prawf o 33% i 17%.
The additional cardiology diagnostic tests were shadow reported between April 2017 and December 2017. During this period the number of patients waiting over eight weeks for their test decreased from 33% to 17%.