Table 1.

Main details of membranes and cartridges.

	AN69	AN69ST	PMMA	oXiris	PMX-HP	CytoSorb
Characteristic	Nonselective	Nonselective	Nonselective	Semiselective	Selective	Nonselective
Year of development	Flat sheet in 1972, hollow fiber in 1980	Flat sheet in 1998, hollow fiber in 2000	—	2009	1994	2011
Adsorption material	A copolymer of acrylonitrile and sodium methallyl sulfonate	Treated with cationic polymer on the basis of AN69	Polymethyl methacrylate	Polymerized by acrylonitrile and methallyl sulfonate	Polymyxin B bonded to the surface of polystyrene derivative fibers	Divinylbenzene copolymer beads with biocompatible
Cytokines removal	Yes Up to 35 kDa	Yes Up to 35 kDa	Yes Up to 65 kDa	Yes Up to 35 kDa	No	Yes Up to 60 kDa
Endotoxin removal	No	No	Yes	Yes	Yes	No
Main application fields	Dialysis, sepsis	Dialysis, sepsis	Dialysis (PMMA-CVVH)	Dialysis, sepsis	Sepsis, pulmonary diseases	Sepsis, septic shock, AKI, COVID-19, ECMO, CPB