I don't remember what they all were, but I recall an ECMO patient that had 4 stacks of Baxter double pumpers. (not the official term) :) Two stacks on each side of the bed and prob. 4 high (you could go more but the pole got real unstable) so that would make 16 if they were all used (I don't recall) and prob. included a couple pressors, one or two for heart rate, sedative, analgesic, back up fluids, a paralytic, TPN, citrate for CVVH, you name it. That's one of those 2 nurses to 1 patient deals where you need a nurse functioning as a 'mechanic' to keep up with the chores. 12 running would certainly be possible. That's a lot of fluid!