Mae tystiolaeth yn awgrymu nad oes angen y gofal arbenigol a ddarperir gan weithwyr proffesiynol gofal iechyd yn yr unedau hyn ar gyfran o'r bobl sy'n mynd i adrannau argyfwng, ac y byddent yn elwa naill ai ar hunanofal neu ar gael cyngor, iechyd neu ofal cymdeithasol mewn rhannau eraill o'r system.
Evidence suggests a proportion of people who come to emergency departments do not require the expert care provided by healthcare professionals in these units and would benefit from either self care or accessing advice, health or social care in other parts of the system.