Ar yr un pryd efallai nad oes angen y lefel honno o ofal ar lawer o'r cleifion mewn unedau gofal critigol. Dengys data cenedlaethol ar ofal critigol i 111,377 o oriau gwely gofal critigol gael eu colli wrth i gleifion aros i gael eu rhyddhau i welyau ar wardiau yn 2012/13; mae hyn yn cyfateb i bron 13 o flynyddoedd neu 13 gwely ledled Cymru mewn blwyddyn.
At the same time, many patients on critical care units may not require that level of care. National critical care data shows that, in 2012/2013, 111,377 critical care bed hours were lost due to patients awaiting discharge to ward beds; this equates to almost thirteen years or thirteen lost beds across Wales.