▁that ▁every ▁patient ▁gets ▁checked ▁for ▁del iri um ▁every ▁day ▁( us ually ▁twice ▁or ▁as ▁much ▁required ) ▁using ▁a ▁valid ated ▁clin ical ▁tool . ▁The ▁two ▁most ▁widely ▁used ▁are ▁the ▁Conf usion ▁Ass ess ment ▁Method ▁for ▁the ▁IC U ▁( C AM - IC U ) ▁and ▁the ▁Int ensive ▁Care ▁D eli rium ▁Screen ing ▁Check list ▁( IC D SC ). ▁There ▁are ▁transl ations ▁of ▁these ▁tools ▁in ▁over ▁ 2 0 ▁languages ▁and ▁they ▁are ▁used ▁glob ally ▁in ▁many ▁IC U ' s . ▁ ▁Oper ational ▁log istics ▁In ▁the ▁United ▁States , ▁up ▁to ▁ 2 0 % ▁of ▁hospital ▁b eds ▁can ▁be ▁label led ▁as ▁int ensive - care ▁b eds ; ▁in ▁the ▁United ▁Kingdom , ▁int ensive ▁care ▁usually ▁will ▁compr ise ▁only ▁up ▁to ▁ 2 % ▁of ▁total ▁b eds . ▁This ▁high ▁dispar ity ▁is ▁attributed ▁to ▁ad mission ▁of ▁patients ▁in ▁the ▁UK ▁only ▁when ▁considered ▁the ▁most ▁sever ely ▁ill . ▁ ▁Int ensive ▁care ▁is ▁an ▁expensive ▁health care ▁service . ▁ ▁A ▁recent ▁study ▁conducted ▁in ▁the ▁United ▁States ▁found ▁that ▁hospital ▁stays ▁involving ▁IC U ▁services ▁were ▁ 2 . 5 ▁times ▁more ▁cost ly ▁than ▁other ▁hospital ▁stays . ▁ ▁In ▁the ▁United ▁Kingdom ▁in ▁ 2 0 0 3 – 0 4 , ▁the ▁average ▁cost ▁of ▁fund ing ▁an ▁int ensive ▁care ▁unit ▁was : ▁ ▁£ 8 3 8 ▁per ▁bed ▁per ▁day ▁for