95% of new patients should spend less than 4 hours in emergency departments from arrival until admission, transfer or discharge.
dylai 95% o gleifion newydd dreulio llai na 4 awr mewn adrannau achosion brys o’r eiliad iddynt gyrraedd nes iddynt gael eu derbyn, eu trosglwyddo neu eu rhyddhau