On-line plasmapheresis using microporous membranes for filtration normally
requires two external circulations (double treatment) before the detoxified
plasma can be returned to the patient. The duomodule, a new filter arrange
ment developed by our group, integrates both steps in one equipment module
using only one external circuit. Separations of aqueous polyethylene glycol
(PEG) solutions as well as human plasma were carried out using the duomodu
le arrangement. The results revealed a considerable decrease of higher mole
cular substances in the feed solutions and a significant increase of these
components in the permeate solution accumulated in the external compartment
of the module. In conclusion, the duomodule arrangement seems to be an use
ful tool for the therapeutic apheresis. (C) 2001 Elsevier Science Ltd. All
rights reserved.