The rationale for therapeutic plasma exchange (TPE) in acute polyradic
uloneuropathy (APRN) is based on the presence of circulating antibodie
s which cause demyelination of the peripheral nerves. This study inclu
ded 24 patients, most having a neurological defect of grade 4, classif
ied into groups A and B. Group A was treated with immunosuppressive dr
ugs only, while group B was treated by a combination of immunosuppress
ive drugs and TPE. The average volume of plasma removed during a singl
e TPE procedure was 2.95 L, and totalled 21 L overall. The efficacy of
the TPE treatment was assessed on the basis of changes in the neurolo
gical deficit grade, and in electrophysiological parameters. It was sh
own that improvements were significantly better and faster in patients
treated by a combination of immunosuppressive drugs and TPE, and when
TPE was started within the first 7 days after the onset of the diseas
e.