Table 2.

 Advantages and disadvantages of most common configurations of membrane lungs for CO₂ retention applications

	Stacked	Wound
Advantages	−Low pressure drop through higher permeability in flow direction −Unidirectional flow −Increased convectional gas transfer through cross-layered fiber arrangement	−Countercurrent flow possible
Disadvantages	−Inhomogeneous wash out of the corners and higher risk of thrombus formation −Allows only crosscurrent flow	−Prone to clogging through washed in debris due to its smaller cross-sectional area −Mostly long fibers and long flow path
Examples	−iLA (Novalung, Germany) −Quadrox series (Maquet, Germany)	−Hilite product line (Medos Medizintechnik AG, Germany) −CAPIOX oxygenator (Terumo, Japan)