Abstract: An intravascular tube assembly is disclosed which facilitates the administration of drugs and fluids to a patient. The invention is especially useful during emergency surgery, or in other contexts where several medications need to be administered simultaneously, and wherein it is necessary to provide a complicated assortment of infusion lines. The assembly comprises a plurality of tubes for delivering the fluids, the tubes having indicia disposed at intervals along their length. In the preferred embodiment, the indicia are printed on the tubes at intervals of about six inches, and are printed three times at each location along the tube, around its circumference. Alternatively, the indicia can be printed in a spiral fashion from one end of the tube to the other. The assembly also includes at least one generally flat separator having a plurality of spaced-apart holes, the diameter of the holes being slightly larger than the diameter of the tubes.