▁receive ▁progress ive ▁treatment . ▁ ▁High ▁dependency ▁unit ▁( H DU ): ▁In ▁the ▁United ▁Kingdom ▁and ▁elsewhere ▁( known ▁as ▁step ▁down ▁unit ▁or ▁progress ive ▁care ▁unit ▁in ▁North ▁America ), ▁most ▁ac ute ▁hosp it als ▁have ▁a ▁trans itional ▁high ▁dependency ▁unit ▁( H DU ) ▁for ▁patients ▁who ▁require ▁close ▁observation , ▁treatment ▁and ▁n urs ing ▁care ▁that ▁cannot ▁be ▁provided ▁in ▁a ▁general ▁w ard , ▁but ▁whose ▁care ▁is ▁not ▁at ▁a ▁critical ▁stage ▁to ▁war rant ▁an ▁( IC U ) ▁bed . ▁These ▁units ▁are ▁also ▁called ▁step - down ▁or ▁progress ive ▁int ensive ▁recovery ▁units ▁and ▁are ▁util ised ▁until ▁a ▁patient ' s ▁condition ▁stabil izes ▁to ▁qual ify ▁for ▁dis charge ▁to ▁a ▁general ▁w ard ▁or ▁recovery ▁unit . ▁ ▁S urg ical ▁int ensive ▁care ▁unit ▁( S IC U ): ▁Also ▁known ▁as ▁the ▁surg ery ▁critical ▁care ▁unit , ▁the ▁S IC U ▁is ▁a ▁special ized ▁service ▁in ▁larger ▁hosp it als ▁that ▁provides ▁in pat ient ▁care ▁for ▁crit ically ▁ill ▁patients ▁on ▁surg ical ▁services . ▁ ▁As ▁opposed ▁to ▁other ▁IC Us , ▁the ▁care ▁is ▁managed ▁by ▁sur ge ons ▁or ▁an est h esi olog ists ▁trained ▁in ▁critical - care . ▁ ▁Mobile ▁IC U ▁▁ ▁Mobile ▁int ensive ▁care ▁unit ▁( M IC U ) ▁ ▁A ▁special ized ▁amb ul ance ▁with ▁the ▁team ▁and ▁equipment ▁to ▁provide ▁on - scene ▁Advanced ▁Life ▁Support ▁and