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. 2013 Mar 8;110(10):159–166. doi: 10.3238/arztebl.2013.0159

Table. Extracorporeal pulmonary and circulatory support systems.

Procedure Principle Indication
iLA (interventional lung assist) Arteriovenous shunt with intercalated gas exchange membrane; pumpless, i.e. bloodflow is generated by the difference in pressure between arteries and veins Extracorporeal carbon dioxide removal in patients without shock syndrome, in order to treat severe respiratory acidosis
VV ECMO (venovenous extracorporeal membrane oxygenation) Pump-driven procedure: Venous blood from the inferior vena cava is enriched with oxygen using a membrane oxygenator; at the same time, carbon dioxide is removed. Return flow usually through a second cannula in the superior vena cava Severe hypoxemic respiratory failure, to ensure vital gas exchange; also suitable for carbon dioxide removal alone at lower bloodflows (low-flow ECMO)
VA ECMO (venoarterial extracorporeal membrane oxygenation; also VA ECLS: venoarterial extracorporeal life support) A pump-driven procedure in which venous blood, usually from the inferior vena cava, is pumped into the arterial circulation following oxygenation, especially to support systemic perfusion Refractory cardiogenic shock, right heart failure, in-hospital resuscitation