A power column (15) is a hollow post having six vertical walls (21-26) and is mounted between horizontal arms (16 and 17) pivoted to the floor (12) and ceiling (11), respectively. The pivotal axis (18) for the arms passes through the head end (19) of a hospital bed (20) enabling the power column to swing from one side of the bed to the other. The electrical outlets (27-29) are on two walls (22 and 23) separated by a front wall (21) so that one or the other of the walls is easily accessible whether the power column is on either side of the bed. Lateral horizontal rails (40) are pivotably mounted on either side of the column. The height of the rails is adjustable. The rails contain one or more gas outlets (45) which are laterally adjustable on the rail and can carry other accessories that are laterally adjustable.