2012.07.05 Quiz: Plasmapheresis

Which of the following is wrong about plasmapheresis?
A. Calculations of the rate of removal of plasma macromolecules are according to zero order kinetics.
B. A single plasma volume exchange will lower plasma macromolecule levels by 60 percent and an exchange equal to 1.4 times the plasma volume will lower plasma levels by 75 percent.
C. The following formula can be used to estimate the plasma volume in an adult :Estimated plasma volume (in liters) = 0.07 x weight (kg) x (1 – hematocrit)
D. It can be done with a cell separator or a plasma filter.
E. For most conditions in which plasmapheresis is used, 1 to 1.5 plasma volume exchanges per procedure are usually adequate.